Here's my rationale for why Otto Porter could POSSIBLY be the number 1 pick:
If you believe the reports, the Cavs are highly interested in signing Greg Oden to a two year deal above the veteran minimum with an option for a 3rd year extension. And, if you believe the reports, Greg Oden is fully recovered, in great shape right now, and ready to roll by opening day. AND, if you believe the reports, Cleveland is the front runner for his services.
If the Cavs sign Greg Oden this off season, to me it makes little sense to draft Noel or Len. Noel is coming off his own knee injury so he's basically a pint sized Oden at this stage. Len can only play center and he's not a lock by any means. Inconsistent and passive are words that were often used to describe him last season.
That leaves you with Ben Mclemore, but he is basically a stunt double for Dion Waiters. Same position, similar skill set, same height! Why???
Could go Anthony Bennett but there are a lot of question marks about his motor, understanding of defense (at all) and lack of height at PF.
Then you have Otto Porter. 6'9, sophomore. 7'1 wingspan. Multi-skilled, high energy, pterodactyl. The kind of guy you could put on Lebron James, Carmelo Anthony, Paul George, Kevin Durant if you saw OKC in the Finals some day. A perfect defensive matchup with length, strength, mobility, and a motor. Basically a 6'9 version of Kawhi Leonard to guard the other team's wing in a league loaded with great small forwards. Your lineup would be:
To me, in terms of balance, this makes the most sense. It is a big gamble to take with Oden, but hey, he just turned 25. It's not a gamble with Noel? Len? There is no "lock" in this draft, so why not put some faith in Oden, draft the most versatile player in the draft who can guard the most superstars in the league, and let it ride?
Otto Porter Jr. is in serious play, as far as I'm concerned, just based on how little we've heard about him as a potential No. 1 pick. He's arguably the best all-around player in this draft, he's young, by all accounts is a very high "character" player, scores through the roof on most advanced metrics, is an absolute position of need... And, going by previous drafts, the Cavs are notoriously tight-lipped about what their actual plans are (Thompson/Waiters). Even Kyrie didn't know he was the guy until his name was announced.
All of that said, basing this on the idea that the Cavs don't need a center because they might sign Greg Oden is incredibly dumb.
If he's the pick, it tells me that the Cavs found some red flags with Noel's injury/attitude/whatever, because he is still easily the favorite for No. 1, despite whatever smoke screens are currently out there.
However, if it isn't Noel, Porter would be the next guy on my list.