Chelsea striker Diego Costa has assured fans that he is prepared to "fight" for the club following his move from Atletico Madrid.

The Spanish international arrived at Stamford Bridge last week in a deal worth around £32m.

Costa is now eager to please the Chelsea supporters by winning plenty of silverware in the coming years.

"I'd say to the fans that you need to be confident that I personally will fight for this club to make sure we are in contention to win as many trophies as possible," he told the club's official television channel.

"I'm part of a great group here of players and we will do everything we can to give the fans what they want - and that's titles."

Costa scored 35 goals in 44 games last season as Atletico won the La Liga title and reached the Champions League final.