Chelsea have completed the signing of central defender Gary Cahill from Bolton for a fee of around £7m. ($9m)

Cahill, 26, passed a medical on Saturday, before attending Chelsea’s 1-0 Premier League win over Sunderland at Stamford Bridge.

“Chelsea is a massive club that looks to win trophies season in, season out,” the England defender said.

“It is a big opportunity for me to be a part of that. Opportunities like this, you can’t turn down.”

Chelsea and Bolton agreed the fee at the end of last month, but Blues boss Andre Villas-Boas revealed club and player were “miles apart” over personal terms.

Meanwhile Inter Milan have tabled a £20.7m ($25m) bid for Carlos Tevez, but it is unlikely to meet Manchester City’s valuation for the Argentine striker.

“Our offer is 25m euros – now it depends on them whether they accept,” said Inter president Massimo Moratti after their 1-0 win over AC Milan.

“The offer is there. Now we are free to decide whether to go ahead or not.”

AC Milan withdrew from talks to sign Tevez, 27, on Thursday after Alexandre Pato refused to join Paris St Germain.

Milan had already agreed personal terms for the player, but were forced to pull out of negotiations with City.

PSG have also expressed interest in Tevez and Moratti claimed clubs in England were also in the hunt.

“I believe there are still other teams involved for the striker,” he added. “There are clubs in England as well as PSG. In football there are no secrets.

“Do we need Tevez? At this moment, it seems not, but football gives different answers every day.