Because he can't play up top, and unless he decides to put in a shift, he leaves the flank exposed.
Best FINISHER at the club. Not the best all round striker.
Who cares, he scores goals which is what we need, I couldn't give a damn if he's not a good allround striker...this club is obsessed with players needing to play fancy passing sh*t rather than keeping it simple and putting the ball in the net.