Most people 'rate' him because he's a very likeable player. He plays with his heart, gives his all.
End of the day, if you're building a squad that's supposed to compete for the Scudetto and CL, you can't have someone who is so poor at decision-making in your defence. Too much of a liability in the end.
True, he brings us something going forward, which is much needed since our coach is too scared to play with a team that will be able to create anything, but he'll have to mature really damn quickly in order for us to pay the 12m for him.
He has been improving though, no denying that imo.