McGregor has good size and length for a stand-up rusher. Teams will like the frame and the toughness, but he's not a natural knee-bender at the point of attack. There is room for better hand placement as a run defender and hand skill as a pass rusher. He won't overwhelm opponents with twitch or short-area quickness, so it might be important for McGregor to keep adding play strength in order to become a more willful challenger as a backup edge in odd or even fronts.
Good athlete but lacking size, play strength and aggression to thrive as an edge defender on the next level. Harrell fails to strike and take command of blocks early on and can be widened out by stronger run-blocking tight ends. He's fairly talented at ungluing from blocks and darting laterally to get in on tackles. His pass rush will need to become his bread and butter if he is to make an NFL squad. He has a legitimate spin counter but will need to prove he can win around the corner with quickness and hand work. Harrell could be a Day 3 selection, and teams might eventually give him a shot as an off-ball linebacker.
