Chelsea goalkeeper Thibaut Courtois is yet to sign a new contract with the Blues and has just one year left on his contract.
Chelsea are scouring the market for possible replacements for the Belgian, and reports claim Chelsea are ready to step up their interest in signing Stoke star Jack Butland.
Courtois has just one year left on his contract, and reports claim he is bound for Real Madrid this summer, which has moved Chelsea to scout for likely replacement.
Butland has made 88 appearances for Stoke since his debut 2013 but the 25-year-old is expected to move on the summer after the Potters were relegated from the Premier League. Chelsea have also been linked with Roma shot-stopper Alisson Becker.