A better Kyle Korver. Same position in the NBA, tad bigger, and same school, but McDermott was the whole show at Creighton and the opposition knew it. They had similar shooting numbers in college, but DM shot the ball twice as much at Creighton than Korver did and that's impressive if you're still maintaining very high shooting percentages.
TS% was 64+% and that's elite enough to offset any defensive deficiencies. A lot of guys come in the NBA and find parts of their offensive game are taken away from them and I expect that to happen to Randle and Gordon for example. McDermott, however, will get the same shots in the pros as he did in college. Saw him in half a dozen games and he has rare range and moves to get his shot off. Korver's quite a bit easier to defend.
McDermott will be an average defender at best. Works hard, rotates well, good team defense, but weakness will be guarding 1-on-1 and he's coming from a zone defensive team. Did not have many steals, but it was a passive zone from what I saw. Not a strong rebounder at the 4, but should be average and no better at the 3. Back of the top 10 sounds right.
Rather have a two-way guy at 6. If for some reason Embiid slides badly and we're stuck looking at a choice of Gordon vs Randle, I would consider McDermott in the mix.