That's the view of fellow Brit Tony Bellew who has delivered a personal column where he dishes out his harsh realities for New Zealand's WBO heavyweight champion.
The handlers of Parker and Joshua are locked in negotiations for a unification fight.
Bellew has penned his column ahead of his juicy rematch with David Haye in London next month.
Bellew noted the injury rumours around Haye and said he would be happy to switch his attention to Parker if the Haye fight fell over.