Now Chisora is attacked by his OWN coach as grudge fight with Haye is plunged into fresh crisis .

Dereck Chisora’s preparations for his heavyweight grudge fight with David Haye are in disarray after he was attacked by his own coach.

The 28-year-old Londoner will settle his differences with Haye at Upton Park on July 14, four months after the pair came to blows at a press conference in Munich.

But Chisora may have to complete his training without long-term mentor Don Charles who revealed he lashed out after his fighter asked him to remove his headgear.

Read more: http://www.dailymail.co.uk/sport/boxing/article-2165925/Dereck-Chisora-hit-coach-Don-Charles-David-Haye-fight.html#ixzz1z5ksAwPr