Andre Villas-Boas has claimed that Chelsea are struggling to come to an agreement regarding personal terms with Bolton Wanderers defender Gary Cahill.

The Portuguese manager's comments have hinted that a deal is far from being completed, despite the two clubs agreeing a fee for the England international this morning.

"We're still miles apart regarding agreement with the player," said Villas-Boas. "We'll continue to monitor this situation as we continue to monitor others.

"Gary has been this season involved in a fighting struggle with Bolton and a fight for position in the league. I think his technical attributes are immense. His pace is fantastic as well.

"There are weaknesses and they are also related to the collective weaknesses of Bolton. He's a player that at international level has been playing well. He can add to this squad or any squad in the Premier League."

The Blues take on Aston Villa at Stamford Bridge tomorrow.