#1 Jan Oblak (Atletico Madrid & Slovenia)
Potential Fee: £88m
One of the premier goalkeepers on the world and one who would walk into the first team of any club on the face of the planet, Oblak is one goalie whose future will continue to attract the most scrutiny.
Like they have done with strikers and goalkeepers for the best part of two decades, Atleti struck gold when they got the tall Slovenian international to switch to the Spanish capital from Portuguese Primera Liga giants Benfica in 2014 for what now seems a bargain fee of €16 million (this fee made him the most expensive goalie of all time in La Liga).
Great shot stopper, excellent commander of the defence line and able to initiate counter attacks with his long kicks and throws, Oblak is one of the few goalies who would step into the Chelsea team and the rhythm would keep going as he is at the same world-class level as Courtois (some insist he is even better).
Diego Simeone would be loath to lose such an important member of his team but given the fact that La Liga insists on buyout clauses for all players in the league, El Cholo would be powerless to stop a move to Stamford Bridge if the Blues can come to an arrangement with Oblak.