Scott Parker has completed his £10m move from Charlton to Chelsea - admitting it was an offer he could not refuse.
Parker, 23, has agreed a four-and-a-half-year deal with the Stamford Bridge club.
And he instantly attempted to play down the ill-feeling surrounding the move which led Charlton boss Alan Curbishley to launch a public attack on his former star.
Parker said: "I have heard different things but I can understand Charlton.
I have been there for 12 years.
"Since I broke into the team four years ago I have given 100% and not let
them down. If I have I have given 200% in the next game.
"But in life sometimes opportunities come along, and this was a chance I
could not let slip by.
"Alan Curbishley has given me the chance and been my driving force. I'd been
there so long I felt part of it. But now it is a new start, and this is where I
want to prove myself.
"Alan is going to be disappointed. He has seen me grow from a young boy, and
I've been a massive part of the team.
"He didn't want to let me go, and I can totally understand that. But opportunities come along that you sometimes can't
Parker added: "I hope I get a round of applause when I go back to The Valley because I think I deserve that."
Chelsea and Charlton have also agreed that Carlton Cole's loan spell at The Valley will run to summer 2005.
Chelsea will now be able to register Parker with Uefa before their deadline of 1100 GMT on Monday for playing in the Champions League.
Russian tycoon Roman Abramovich has spent £121m on players since buying the club in July 2003.
Chelsea club face VFB Stuttgart in next month's Champions League second round.