Ofcourse he can, he has the power to knock anybody out. Is it likely to happen? Fuck to the no. 93/100 times Fury outboxes him easily.
I sparred couple of UFC fighters, no big names, they would land waay more shots on me then I could on them, they were also taking it easy obviously, as was I because I'm not a dick or an idiot. But couple times I sparred a pro boxer under boxing rules, it was ridiculous , they could pretty much touch my chin at any times and I couldn't land anything other then a bodyshot here or there. Also we were going super light, and it still didn't feel good someone finding the tip of your chin on every other shot. The boxing skill needed in boxing is a lot more then striking skill needed to be a good professional mma fighter.