His best position in my opinion, is a central playmaker but the team needs to be completely geared towards him to get the best out of that system and I don't think with the personnel we have, it's what's best for the team.
Luckily for us, he's still a very good wide midfielder on either side. I prefer him on the right to be honest, it gives him more options with that glorious left foot. Stick Santon behind him and that's a natural partnership in my opinion, Jonas and Ferguson on the left and that would go a long way to solving our attacking problems. It's certainly what's best for our strikers, they need some more varied service.