I just read this article

David Haye 'may postpone retirement' if he can secure Klitschko rematch | Metro.co.uk

And it pretty much confirmed to me what we already probably knew, these two are going to fight again. But what sealed it for me was what Wladimir said about the prospect of a rematch.

Klitschko, though, is not entirely convinced Haye wants to fight again and said: ‘If the guy comes into the press conference shouting, “I want a rematch”, then okay.

‘But I didn’t see from David Haye a real desire to have a rematch. Instead the rematch was actually pushed to him [by reporters].

‘If there is a rematch I will definitely knock him out and now I’m in the driver’s seat.’