You can phone a friend if you want? Maybe not... Go 50/50? Oh & it's not Curry or Clenbuterol either...
He'll defo go into the HOF, I think that's a given already. He's done more than some boxers who are already in and he's famous/a draw enough to get in on that. ATG is a different question and it depends on how you define what an ATG is. It used to be top 100 P4P or top ten in your division all time for many but you can probably extend it some due to time creating more fighters who could fit the bill. Currently I probably wouldn't have Canelo even close as I doubt he'd make my top 200 P4P boxers or the top twenty of any division. I'm not sure how far he can go, he's not far from maxing out on his weight though he can probably pick a belt up at SMW at somepoint should the right opponent come up. He at least has the fights to do so, if he ran through say GGG, Saunders, Jacobs, Charlo, Derevyanchenko, Spence and maybes some at SMW he can achieve it. He'd probably have to beat the majority of that list, whether he can or whether he will, I don't think so personally.