#2 Mateo Kovačić (Real Madrid)
The Croatian just at the age 24 is a proven winner as he has already won 3 Champions League and 1 La Liga. He has been often compared with Croatian compatriot and Real Madrid teammate Luka Modric as well, due to his style of play being similar to Modric.
Though he is not a regular for the Los Blancos, he has been impressive whenever called upon and has provided good cover for his Real Madrid teammates.
Kovacic has already admitted that he could leave the Bernabeu in the summer to get more playing time on the pitch and according to reports Jose Mourinho has ordered United's chief's to trigger his release clause which is somewhere around £44.2 million in his current contract as he looks to beef up his midfield.
If it is true that his release clause is £44.2 million then financially he is a better option, also he has proven his quality season after season in a top league like La Liga, unlike Sergej.