The German Boxing Board (BDB) has joined the British Boxing Board of Control (BBBofC) in opposing the heavyweight fight between David Haye and Dereck Chisora. The contest, due to take place at Upton Park on the 14th of July, has been sanctioned by the Luxembourg Boxing Federation. The BDB has written to the European Boxing Union (EBU) and the BBBfoC in support of the board over the proposed clash.

BDB president Thomas Putz said: "I was surprised, disappointed, upset and shocked when I heard [about the] fight between Dereck Chisora and David Haye. "Neither Chisora or Haye hold a valid licence with the BBBofC."

European Union freedom of trade laws permit the fight to be held in the United Kingdom, while they have been given licences by the Luxembourg Boxing Federation. Chisora was suspended indefinitely for his role in a brawl with Haye in Munich but has appealed against that verdict, and Haye has not renewed his licence since his retirement from the sport in October 2011.

The World Boxing Council (WBC) has said they could expel both fighters, while a statement from the British board read: "Anyone who participates will be deemed to have terminated their membership."

Putz has joined his WBC counterpart Jose Sulaiman to urge the EBU to expel the LBF - and for the sport to stand firm in condemning a bout described by heavyweight champion Wladimir Klitschko as a "freak show".

Putz said: "For obvious and good reasons Dereck Chisora has lost his license with the BBBoC, is under suspension from the BDB, and has been suspended indefinitely by the WBC. This fact alone justifies Wladimir Klitschko's comment that we should not talk about a boxing fight but about a 'freak show'. I have to say that, even though I would choose a different wording, I totally agree with our world heavyweight champion in this point."

“I think most of my colleagues from the boxing commissions and federations all over the world and the world sanctioning bodies agree that the fight between Haye and Chisora on July 14 should not take place and cannot be tolerated or even supported by the EBU or any of their affiliated commissions or federations.

“As a Union we have to respect each other and support each other for the sake of the EBU and the sport in general. Therefore I cannot understand the decision of the Luxembourg Boxing Federation (LBF) to support the ‘freak show’ against the explicit will and decision of the BBBoC, the BDB and the WBC.

“However, if the LBF sticks to its decision and plans to actually sanction the ‘freak show’ I hereby officially request to expel the LBF from the EBU for not respecting the authority and decisions of other affiliated members of the EBU. "