IT will take more than one close range strike against Middlesbrough to convince detractors that he’s not a £30m flop.

But Dimitar Berbatov’s festive form has gone a long way to repaying the record fee United laid out to bring him to Old Trafford.

The Bulgarian star’s winner on Monday followed fast on the heels of his late intervention at Stoke when he set up Carlos Tevez for the crucial goal on Boxing Day.

It is debateable whether Berbatov would even have started against Boro, if not for Tevez being granted compassionate leave to return to Argentina.

But he seized his chance with one of his best performances in a Red shirt.

The United manager has been full of praise for the former Tottenham striker even in the face of some unconvincing form since his arrival in September.

Seventh

His goal against relegation-threatened Boro was only his seventh of the season, his third in the league, with the others coming against fellow strugglers West Brom and Stoke.

Even Berbatov admits there is more to come from him, as well as the rest of the United team, that have proved unusually wasteful in front of goal of late.

“I have plenty more to show and I will keep working,” he said. “With the help of the guys I know we can do a lot.

“I’m not worried about the chances we are missing. Maybe we must work on our concentration in the last third of the field.

“The boss tells us all the time not to lose our concentration because it will be very important in the crucial games. We will keep working on it, but as long as we are creating chances it is good.”

It was for games like Boro that Berbatov was bought – tight encounters when one moment of magic can make all the difference.

While his strike on Monday could hardly be described as magical, it was nonetheless crucial in keeping United in touch with Premier League leaders Liverpool.

Boost

United are now seven points behind the Anfield club with two games in hand. If not for Berbatov’s strike it would have left them nine points adrift, handing Liverpool a significant psychological boost going into 2009.

And the importance of victory was not lost on Berbatov.

“It was a must win game,” he said. “I am glad that we won it. It was obvious that we were the better team, we had so many chances. We only scored one, but that was enough.

“Sometimes you miss a lot of chances and lose concentration. But Middlesbrough are a very good team and 1-0 was enough.

“No matter if you win by one or two goals, three points is the most important thing.

“We are there in the title race. We can win our two games in hand and then it will be all good for us. In the end it is in our hands.”