Roach feels 'weak chinned' Khan won't change
Amir Khan boxes with a style that is difficult to change, according to the Bolton fighter's former trainer Freddie Roach.
Khan left Roach's Wild Card gym in September following his fourth round knockout defeat to Danny Garcia in Las Vegas last summer, before joining forces with new trainer Virgil Hunter.
Since teaming up with Hunter, Khan has enjoyed victory over Carlos Molina before overcoming a tough Julio Diaz in his long-awaited return to the United Kingdom in April.
However, despite admitting Khan possesses a great boxing talent, Roach was critical of the 26-year-old's style, saying it left him open and had become difficult to change.
"The thing is he needs to be a better boxer, a smarter boxer," Khan told Koncrete Jungle. "I couldn't [change] that, his new coach couldn't do it either."
Roach also maintained that Khan possessed a weak chin, but if the 2004 Olympic silver medallist adapted his style he would find it easier to defeat his opponents.
"He likes to exchange, he stays in the pocket too long," Roach added. "When he does that he gets taken and he doesn't have a great chin.
"He's a very good fighter. He's got great speed. If he wouldn't exchange so much, he will beat a lot of guys easier."
Khan, who recently confirmed his rise to welterweight, will return to the ring in December and has hinted his desire to tempt either unbeaten American Floyd Mayweather Jr or Lucas Matthysse into the ring.