Chelsea are reportedly considering a making a January bid for Bolton defender Gary Cahill.
The 25-year-old is also a target for Tottenham, while Arsenal have shown an interest in his signature in the past.
But, according to the Daily Express, Chelsea will make the early running for Cahill during the transfer window, and a £10 million bid could be in the offing.
Andre Villas-Boas is said to have identified Cahill as an ideal candidate to partner John Terry in the Chelsea defence, and the pair are set to start together for England against Sweden on Tuesday night.
Chelsea, meanwhile, will reportedly have to offload a centre-back before the way can be paved for Cahill's arrival at Stamford Bridge.
Brazil international Alex is said to be the player most likely to make way, and Harry Redknapp is said to be interested in signing the 29-year-old.
However, Juventus and Zenit St Petersburg are also reported to be monitoring Alex's situation.