4) He’s had success vs Mourinho
If he does team up with Jose Mourinho this summer, the Chelsea manager will be glad not to be playing against him anymore! Koke has caused the Portuguese coach numorous problems as a Madrid player, helping the club beat his Real Madrid side 2-1 in the 2013 Copa Del Rey final, and also knocking his Chelsea side out of the Champions League semi-finals last term with a superb second-leg display at Stamford Bridge.