3-4 OLBs are probably worth discussing given the availability/cost in FA or trade is likely to be prohibitive.
I see Polite getting mentions at the #12 pick. The highlight cut ups show the burst, dip and motor you'd like but I think he'd be a big reach at that spot.
Consider his performance against Georgia at the 8:50 mark in this tape against good competition:
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The commentator wonders who is the RT #79. That's Isaiah Wilson, a 5 star recruit playing as a redshirt freshman who goes about 6'7, 345lbs. who was not a starter at the beginning of 2018. The LT #71 is Andrew Thomas, 6'5", 320 lbs, a freshman All America in 2017 and All-SEC and second team All America as a sophmore in 2018. It's easy to project these guys as starting in the NFL a year or two or three down the line at one position or another.
So, start with Polite's work against Wilson in the early part of the tape. He gets engulfed and can't out-quick him. Whether it's upper body strength, hand and arm size, technique or maybe a combination of the three, Polite engages and his arms collapse into the block. He doesn't fare much better as the tape goes on against either OT, shoved around the back of the pocket when not engulfed.
To his credit, he starts to make some headway in the 4th. quarter in getting around the edge, almost knocking the ball out of the QBs hand on one play, though that may be a stamina issue Wilson needs to work on. Nonetheless, Polite's motor keeps running throughout to his credit.
I think where he shows best is as a smart run defender.
I'll be curious to see what the Combine shows, particularly height/hands/arms/lifts. He doesn't look very big, which does need to be considered. FL lists him as 6'2, 260lbs. but those college numbers can be off. If he's in fact 6'2" he sure doesn't look 260 lbs.
You'll never hear anybody else say this, but his best position might be as an off-the-ball OLB in a scheme that likes to blitz and where his run reads can be put to use. Of course there's nothing I've seen where he drops into coverage and the game is such that off-the-ball guys need that 40 speed which the Combine would show. This is probably the last you'll hear of this idea.