Where does one begin...
He's shit under press, and his use of the ball under any kind of heat is unreliable, you don't want him receiving the ball in tight spaces (like you want from an 8 when pushing teams into their third) because he'll cough it up and teams will counter on you. He lacks dexterity and mobility, he's also pretty shit without the ball. He doesn't exactly have vision, his repertoire seems to consist of cutting in and releasing a shot or cutting in and releasing a cross (sometimes it's hard to tell which is which).