Chelsea on Thursday completed the signing of Bolton's out-of-contract Israel centre-back Tel Ben Haim on a four-year deal.
The news ends a six-month chase for the 25-year-old who was also a target for Newcastle, now managed by Ben Haim's former boss at Bolton Sam Allardyce.
"I feel fantastic to be part of that amazing club. Amazing fans and I'm looking forward to start," said Ben Haim. "The first games in the Champions League, I'm very excited about that.
"If you ask every player, they want to play for Chelsea, for that team. It's one of the best teams in the world so I'm very happy to be part of that.
"I don't like to talk too much about myself but I can guarantee that I give 100 per cent for the club and hopefully I don't disappoint anybody, especially myself."
Ben Haim becomes the third new addition to Chelsea's first team following Claudio Pizarro's signing earlier this month and the agreement that Steven Sidwell will join on 1 July.
Ben Haim spent three years at Bolton, where he made 110 appearances. He previously played for Maccabi Tel Aviv and has played 22 times for the Israel national team.
Former Bolton boss Sam Allardyce, now in charge of the Magpies, had attempted to persuade the Ben Haim to rejoin him at St James' Park. But Allardyce admitted defeat.
"It's looking like Tal will be going to Chelsea, unfortunately," Allardyce said. "We have had a long, hard go, but I think the lure of the (former) champions has perhaps just pipped me at the post."