BOLTON manager Sam Allardyce is determined to block any moves for highly-rated defender Tal Ben Haim.

The 23-year-old Israel captain has been linked with a switch to Chelsea when the transfer window reopens next month.

But Allardyce said: "Tal is a vital member of our first team and is not available for transfer."

He added on the club's website: "Chelsea have not engaged in any dialogue with us."

Should Bolton consider selling Ben Haim? Have your say.