You could tell in his pre-fight interviews he wasn't that up for it, seemed almost irritated/bored by the fact he had to fight him again(Wilder had to push for it though so no problems with that)Fury was having troubles with his newborn I think too plus he’s gone full Jesus loves me in the time between the last fight and now
I also feel AJ losing took a little motivation away too. Honestly i'm slightly worried he might fall in to one of those spells where he feels he has nothing to fight for anymore. He said in one of the interviews that even if AJ wins the rematch it's not the same fight anymore, can tell he's a bit downbeat.
Hopefully not though as a Whyte fight then Usyk/AJ 2 winner would really cement him as one of the greats(he is already, but more so).