According to a report in The Sun, Spanish giants Real Madrid want to bring Chelsea's Portuguese right-back, Jose Bosingwa, to the Santiago Bernabeu during the summer transfer window.

The full-back, whose deal at Chelsea expires at the end of the season, has already rejected a contract extension to remain at the club and will be a free agent in the summer.

Real Madrid boss Jose Mourinho, Bosingwa's compatriot, worked with the defender during his time at Chelsea and Porto and is understood to be leading the race to sign the player. Reports in Spain even claim the 29 year old has already agreed a deal to join the Spanish club, under the Bosman Ruling.

Mourinho, an admirer of Bosingwa since his Porto days, is confident he can beat off competition for the defender from other interested parties, including AC Milan, Bayern Munich and big-spending Paris Saint-Germain.

The report also says Chelsea offered Bosingwa to PSG in the January transfer window as they tried to recoup some of his transfer fee before his contract ran down but the player wanted to wait till the summer to open up more options.

Bosingwa arrived at Stamford Bridge from Porto in 2008 for £16.3 million and has made 118 appearances for the club in all competitions, scoring three goals and providing nine assists.

The player has been linked with a move away from Stamford Bridge for a number of months now and he would fit perfectly at Madrid as Mourinho looks to land a first choice right-back in the summer since Sergio Ramos has shifted to a central defensive role this season.

The loss of the versatile Bosingwa would be a big blow to Chelsea, who are desperately trying to break into the league's top four. The Portuguese man, along with fellow wing-back Paulo Ferreira and forwards Didier Drogba and Salomon Kalou are all available for free in the summer.

Chelsea are fifth in the table. They are tied on points with Newcastle United and three points behind Tottenham, who sit in the final Champion League spot.

The Blues' interim manger Roberto Di Matteo knows that each match is now a must-win game for the club as he readies his team for the derby match against Fulham at Craven Cottage on Monday.