7) Cristiano Ronaldo (Real Madrid)
Once the most expensive player of all time when he joined Real Madrid for £80m, former Manchester United star Cristiano Ronaldo could still end up costing £100m if he moves soon, even at the age of 30.
8) Alexis Sanchez (Arsenal)
A world class talent who was a steal for Arsenal, Alexis Sanchez could definitely become one of the best in the world, and it’s not inconceivable that the Gunners would refuse a sale unless a mammoth bid came in.