Borussia Dortmund defender Neven Subotic is a top summer target for Chelsea.

The Sunday Mirror says the Serbia international was the subject of a last-ditch January bid by Manchester City, but boss Roberto Mancini failed in his bids to lure Subotic.

Subotic broke into the Dortmund first team last season and has been impressive this campaign, with clubs all over Europe interested in him.

He signed a new long-term deal at the Westfalenstadion this summer, but despite being on a contract until 2014, Chelsea and City remain interested in him.

Subotic's agent Stephen Kelly said: "There was no chance of Neven leaving Dortmund in January.

"As we know, anything can happen in football and the summer is a different story, but it will take a hell of a lot of money to get Dortmund to sell Neven."