Chelsea manager Jose Mourinho has confirmed summer signing Diego Costa, Didier Drogba, Ramires, André Schürrle and John Obi Mikel are doubtful for the weekend clash against Crystal Palace.

The Blues make a trip to Selhurst Park on Saturday and are in fine form this season, having won six out of the seven games played so far this season. The Portuguese tactician will take decision over including several

Jose reports a few injury concerns but he will wait until tomorrow to make decisions. #CFC

— Chelsea FC (@chelseafc) October 17, 2014

Jose says Diego Costa is a doubt for the game, as are Ramires, Drogba, Mikel and Schurrle. #CFC

— Chelsea FC (@chelseafc) October 17, 2014

The Stamford Bridge outfit have a busy schedule in the upcoming weeks as they face Palace, Maribor, Manchester United, Shrewsbury Town and Queens Park Rangers in less than 15 days.

With Costa and Drogba doubtful for Palace clash, Mourinho could field summer signing Loic Remy to lead the west London club’s attacking lineup on Saturday.

Last season, Mourinho saw his side suffer a 1-0 narrow defeat away from home, curtsey to John Terry’s own goal. The former Real Madrid manager says Palace were a better team when they defeated Chelsea earlier in March.

Jose says last season's defeat at Palace was not a lesson as the team deserved to lose, and it is easy to analyse. #CFC

— Chelsea FC (@chelseafc) October 17, 2014

Jose says in last season's game at Selhurst Park, Palace were better in every aspect of the game. #CFC

— Chelsea FC (@chelseafc) October 17, 2014