I can't stand haye but have to give him credit for dropping g chisora like a bad habit at that presser.
Haye may be having problems with his repaired shoulder. Too quiet, there is a pattern there. I believe he missed the Adamek fight. IMO the best option for the last 2 years.
From day one I have never been a fan of David Haye, mainly because of his ego. As a fighter though he has an exciting style, very underated skills and could whack with either hand. I believe he had a lack of fights is because he does not have great stamina. I dont believe he would be a hard trainer, his weight training and body appearance gave the impression he was super fit when in fact he is not. Everybody that criticises him (including myself) though would all watch his fights if he came back though, whether wanting him to win or not.