I seriously doubt he will be the next "ronaldo" or "messi". He is going to be excellent though. I believe the game has rated him well based on the "negative potential" bases, since the highest he achieves is being at par with Lampard and far exceed Joe Cole if you look at the numbers. Just be lucky to generate the right one
p.s. a funny thing has happened. I decided to loan Kakuta out to Leichester and Deco comes out and says that it was the perfect decision as he is disrupting the teams chemistry :S