Trainer Virgil Hunter has said that Amir Khan will have to improve in the ring if he is to be a world champion again.
Hunter told Sky Sports News: "I'm convinced now that in his own mind Amir knows he's got to work more and come to the gym more, and that he can't just go off between fights.
"I see Amir for three months when he comes over here, so the opposition can creep ahead of you because all the top fighters are with their trainers all the time.
"It is something we are going to work on to see if we can bring him up to the level we need him to be at."
Khan has won four world-title bouts in his 31-fight career.