Niklas Sule – £25m
Reports in Germany in recent days have suggested that Tuchel has cooled his interest in the Bayern Munich defender but reliable journalist David Ornstein has said that the 25-year-old is being looked at by Chelsea.
Sule has one year remaining on his contract, so he would be relatively cheap, and he is still pretty young so he could fill the gap when Thiago Silva moves on from Stamford Bridge.