The Blues have announced the news on their website and state that the Premier League have rubber-stamped the deal.

Inter Milan had earlier left Quaresma out of their updated Champions League squad, prompting reports he could be offered to Tottenham in exchange for midfielderJermaine Jenas. Yet he will be heading to a different London club.

The Portuguese winger made six appearances for Inter in the group stages of Europe's elite club competition but has failed to impress since joining the Italian champions in the summer from Porto.

"I am disappointed with him,'' said Inter coach Jose Mourinho. "He is a player that I wanted in Milan but unfortunately, he has not been able to overcome the criticism directed at him.

"Without confidence in oneself it becomes more difficult.''

Argentinian striker Hernan Crespo yet again failed to make the cut for Inter's squad, withZlatan Ibrahimovic, Julio Cruz and Adriano grabbing Inter's attacking places for the Champions League.

The Serie A leaders take on Manchester United in the first knock-out round on February 24.

Inter travel to Old Trafford for the return leg on March 11.