He said: "I have tried to improve that. That was a criticism from Rafa. He's helped me to become slightly more disciplined and I feel I can play either role - either attacking or if we're up against a good side when you need your two midfield players to be disciplined, I can do that now.
"You can't afford to be Roy of the Rovers all the time against top sides. If I'm wandering off all over the place my team-mates will come unstuck."