David Haye impressed by Justin Bieber's boxing skills

David Haye has revealed that he was impressed by Justin Bieber's boxing skills when he trained him.

During an interview on The Clare Balding Show, the former heavyweight boxing champion said that the 'Baby' hitmaker is one of the most capable celebrities that he has worked with, Metro.co.uk reported.

He added that he didn't expect him to be that good and he was indeed shocked by his hard punches.