Peter Kirkley spotted the City new boy as a 12-year-old playing in a schools' match in his native North East, and recommended him to Middlesbrough.
Now aged 22, Johnson is settling in at Eastlands after making an £8.5m switch from Boro last Monday.
His team-mates have jokingly dubbed him the new Robinho - with Johnson aiming to be a bigger success at Eastlands than the £32.5m Brazilian.
And according to renowned scout Kirkley, the England Under-21 winger will thrive under his new manager's direction.
Kirkley, 67, said: "He's gone to a club with a manager who has a continental approach, and that will suit Adam.
"He's not a rough-and- tumble player. He's the sort who likes to pass the ball.
"I'm certain he will benefit from playing for someone with Roberto Mancini's vast experience.
"And he'll also benefit from the players around him. There's a saying that good players need good players. And Adam will be playing alongside some of the best at City.
"He's an exciting player. He's got pace down the wing but he can score goals too, which is unusual in a winger.
"Adam is also a very hard worker. That's a quality he's always had. And he's a brilliant kid."
Kirkley knows a thing or two about spotting young talent, thanks to a 35-year association with Wallsend Boys Club, which has produced a host of stars, including Alan Shearer, Steve Bruce, Michael Carrick, Lee Clark and Peter Beardsley.
But he was scouting for Middlesbrough when he noticed a slightly-built young lad tearing down the wing and delivering a stream of dangerous crosses.
"I didn't know anything about him," Kirkley recalled. "I'd never seen him before or heard anything about him. I was just out scouting and there he was.
"He was playing in a local league, and his skill stood out immediately. He had a great left foot and he could go past people.
"So we took him in at Boro's centre of excellence for a while, and when the Academy system was set up, the club kept him on.
"But we weren't convinced he would be big enough to cope with professional football.
"He had to work very hard because he was the smallest and the slightest in the group.
"But we looked at his father, who's not a small fellow, and we were fairly confident he would grow as he got older.
"When I look at a player, the most important thing is attitude. Adam had a great attitude and his parents were always supportive. They were there all the time.
"He never missed a training session - it was obvious he loved his football."
Johnson's football talent was obvious from a young age to those who taught him at Easington Community Science College in east Durham.
Fred McNay, the school's head of PE, remembers a shy young boy with a quiet determination to crack the big time.
McNay said: "He was determined to make the grade and very focused on improving.
"We are very pleased for him at the school. Manchester City look like they have a good future ahead of them.
"Although he has gone for big money, Adam will realise the work as a player has to go on.
"But I imagine he still has the drive and determination to succeed and go on to even better things."
Not everybody, though, spotted Johnson's ability early as both Sunderland and Newcastle allowed him to slip through their fingers.
Johnson's father Dave remembers how the Black Cats failed to pick up on the Sunderland-born youngster as he honed his skills at a club-run children's football scheme.
Dave said: "He regularly went on a football scheme run by the club at Sunderland Leisure Centre. He would have been about five or six at the time.
"He came away with all the certificates, but they never picked up on him."
Neither did Newcastle when he trained at their School of Excellence between the ages of eight and 10 - and so it was Boro who were able to snap him up.
But even though the Toon and the Black Cats didn't spot Johnson, his ability did catch the eye of two former England captains before he'd even left primary school.
Johnson's mum Sonia tells the story of how the late Emlyn Hughes and Johnny Haynes noted his skill on the ball.
"We were on holiday at Butlins and Adam entered a football skills competition," Sonia explained.
"He ended up winning it and he met Emlyn Hughes, who was lovely with the kids.
"Emlyn said to him: `Your left foot is great.' It was wonderful that he singled him out."
Haynes was just as impressed when he saw Johnson play in 1998.
Sonia added: "Peterlee and District Schools played at Wembley in a seven-a-side tournament sponsored by Adidas.
"Adam's team and three others from around the country won through to Wembley.
"The finals were played on the same day as England Under-16 schoolboys were playing Brazil.
"They played the match on the Wembley turf and I do remember Adam scoring twice.
"Johnny Haynes was the guest of honour and he said to Adam: `You're a great little player. You've got a lovely left foot.' I'll always remember what he said."
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Showing comments 1 to 25 and replies | View All
The Blue Tool, URMSTON (06/02/2010 at 16:14)
The Blue Tool, URMSTON (06/02/2010 at 16:40)
The Blue Tool, URMSTON (06/02/2010 at 16:42)
The Blue Tool, URMSTON (06/02/2010 at 16:43)
The Blue Tool, URMSTON (06/02/2010 at 16:48)
The Blue Tool, URMSTON (06/02/2010 at 16:51)
bubba, cleethorpes (06/02/2010 at 17:00)
bally in sedbergh (06/02/2010 at 17:10)
us city fans like to see wing play weve got the players to do it so stop playing so narrow.that today was a disgrace.two games on the trot are the worst performances ive seen for a few years
Edski Vega, Nottingham (06/02/2010 at 17:11)
100% Blue, only hate man utd (and spurs), Manchester (06/02/2010 at 17:19)
This combination was hopeless. After 27 minutes I thought to myself 'crikes we haven't had a decent chance or any real possession'. It was diabolical. I couldn't help asking as I often have this season: why do city defenders seem content on always letting the opposition get the cross in ? Other teams are closing strikers down much faster than our defense and getting the ball to the midfield and front players.
Just before half time, Wayne Bridge's boot went flying, which was about the closest we'd been to scoring.
The second half wasn't as bad, but that kinda sums it up doesn't it ? Two more events of total disbelief were when Adebayor actually moved out of the way to let Boateng's shot go in our net for the second goal (instead of blocking it - coward), and Mancini's decision to wait until 84 minutes to put Petrov on. On top of all that we were crap.
If you think this is a depressing read, you should have gone to the match. Fortunately, I didn't as I am serving in The Gulf. To add insult to misery, Scum won 5.0 nil. City really are shite. They depress me more than anything else in my life right now. Hull were average. The referee was unfair to City. We didn't get a single decision. Ah well, at least I don't have to live in Hull. Keep your chin up boys. pip. pip.
ps. good games for Johnson and Vieira. Mancini still the man !
50 and mad for it (06/02/2010 at 17:22)
FANTASTICO., manc`land (06/02/2010 at 18:04)
I think the pompy game proves that.
hughes out?? be careful what you wish for..
Rick Jenks, Bury (06/02/2010 at 20:17)
I have been accused of being a moaner and whinger. But now I see your comments again that brings into question as to whether Mancini and Kidd can work the magic they supposedly possess. I see Adders Senior now having doubts and he is one of the most constructive submitters on this site.
Erc, Dutch - Colin Bells Boots, Wilmslow.
I hope both of you are now starting to grasp and understand my feelings you to Steve from Poynton who called me a moron a few weeks ago. I was never comfortable with the manner in which Mark Hughes was dismissed and I am far from comfortable with the current management structure in Mancini, Kidd, Cook and Marwood. If Sheikh Mansour caused this problem I hope he reacts soon and axes the whole of the management team. The Viera signing would have been good several years ago but not now.
I will attend matches but make it quite clear. City have an abundance of talent in the squad but we need someone more experienced with the nouse to unlock the key and get the players playing to their full potential consistently.
3 major losses in 2 weeks Everton, Man U and now Hull. I said earlier we will probably finish in the top 10 but not the top 6.
Chairman Mubarak you are also gulity of aiding and abettring rash decision making by people who are out of their depth, this is aimed at Cook and Marwood.
Don't count on the team progressing in the FA cup as it is possible we will fail there too.
Jose or Gus as requested many times please
Rick Jenks, Bury (06/02/2010 at 20:18)
a lesson in pride , Manchester (06/02/2010 at 20:56)
ted knott, droylsden (06/02/2010 at 21:05)
6/02/2010 at 16:14
THE BIGGEST UNDERSTATEMENT OF THE SEASON
Manicini started going downhill when he mandated his team to defend at home against United in the Carling Cup -- I find it very hard to forgive for that and the display at Hull has totally compounded
my dislike towards him. I just dont know where we can go from here now the rot has set in....
Finally what was that all about at half time when Bobbymanc came out long before the players and stood there staring in silence apparently in deep thought?
MAN-KEY-UNION, MANCHESTER (06/02/2010 at 21:46)
mancini is the man (06/02/2010 at 21:49)
FANTASTICO., manc`land
6/02/2010 at 18:04 HUGHES OUT THANK GOD HE WENT .. WHAT A CRAP MANAGER HIS FAULT WE HAVE PLAYERS WHO CANT DEFEND HE BOUGHT THEM NOT MANCINI ... AND BLUE TOOL YOU ARE APTLY NAMED .. MIGHT BE BETTER OFF BEING CALLED BLUE THE TOOL THOUGH ... BACK THE TEAM OR P*SS OFF AND SUPPORT THE RAGS ... AND REDSKI VEGA YOU RAG MUPPET DROP DEAD YOU ARE A JUAN KERR
Sam Haggar Lowestoft -MCFC-Bluemoon (06/02/2010 at 22:47)
FLEA, MANCHESTER (07/02/2010 at 08:42)
Colin Bell's Boots, Wilmslow (07/02/2010 at 09:51)
Edski Vega, Nottingham
6/02/2010 at 17:11
City obviously need somebody positive like you Edski to inspire them to greater things.
I always find your posts totally uplifting !
ted knott, droylsden (07/02/2010 at 14:03)
We were constantly saying it with Hughes and with Pearce "only two games away from the sack" etc etc well here we are again with Manicini now look at the importance of our next two fixtures both of which will without doubt decide where our season is going.
I think most of us all agree the doubts are creeping in regarding Roberto Mancini results and performances dont lie... nice if we beat Bolton comprehensively and beat Stoke to reach the 6th round of the FA Cup but on our last two performances I'm not sure if the mentality will improve sufficiently enough to ride a calm before the storm.
Colin Bell's Boots, Wilmslow (07/02/2010 at 15:52)
Rick Jenks, Bury
6/02/2010 at 20:17
Why not apply for the job yourself Rick, wuth ted knott as your assistant ??
After all you two seem to think have all answers to City's problems
Who needs a manager with fans like you two to guide the diection of the club ?
john blue, levenshulme (07/02/2010 at 21:39)
Sam Haggar Lowestoft -MCFC-Bluemoon (07/02/2010 at 21:58)
7/02/2010 at 15:52
Well said if they were City owners we will have a new manager every time we lose a game.