#1 Gareth Bale
This is a no-brainer really. Gareth Bale gets paid far too much money to be spending the amount of time he does in the hospital or on the bench.
After going great guns in his debut campaign, Gareth Bale's injuries have clouded his Real Madrid career and has not been able to become the player he was touted to become. At Real Madrid, he is now sporadically used after Lucas Vazquez and Marco Asensio went on to prove their worth in the Welshman's absence.
Gareth Bale has a lot of potential suitors with Manchester United being the most prominent of them. Manchester United have the financial clout to pull off big money moves and will be ready to break the bank for Bale.
With Marco Asensio also coming to the fore, there is very little chance of Bale becoming a mainstay in the starting lineup at Real Madrid anymore. If Real Madrid offload him this summer, they can help shorten the wage bill and also use the proceeds from his sale to buy another player. And for the amount of money that Bale could get them, Real Madrid will not need to hold back in pursuing world-class talents.