It's official. Mateo Kovacic is a new Chelsea player. The Real Madrid midfielder will play this coming season as a loan on the London club given the competition that is in the midst of the Julen Lopetegui team.He announces what Chelsea has done through his twitter account, in which he explains that the Croatian international, 24, said after the signing that "I am very happy to be here at Chelsea. It is exciting. I will try to give my best for this club. It's a new league and the beginnings are always difficult but I'm sure that both the coach and my teammates will help me. "