Maybe even in the top five.
He'll probably go in the 15-20 range, because he's not athletic enough, not big enough, blah, blah, blah.
The league is filled with "talented" players these days who have a limitless ceiling but are very inexperienced and limited in their understanding of the game. Plus, they're not always coachable, with their entourages, big guaranteed contracts and all that other nonsense. That's why it's such a bad product these days.
If you take McDermott, you're getting a veteran with a high basketball IQ who can overcome his physical deficiencies with a solid back-to-the-basket game, good mid-range shot, efficient, etc.
He's everything NBA GM's don't look for in a player anymore, so I'm sure he's a borderline lottery pick at best. But he'll have more staying power than 75% of the guys drafted ahead of him, because he'll out-smart -- and thus out-perform -- the competition. Just watch.