John Obi Mikel fears one Chelsea star could prevent them winning the Premier League

John Obi Mikel has sent Enzo Maresca a warning (Picture: Getty)John Obi Mikel thinks Chelsea need to replace Robert Sanchez and his mistakes if they are to be considered serious Premier League title contenders.Chelsea made it three league wins on the spin last weekend with a 4-2 home victory over Brighton but question marks were raised over the performance of Sanchez.The Spanish keeper was at fault for both Brighton goals, failing to claim a high ball which Georginio Rutter headed home befo