He has decent size for an NFL rush DE at 6'3 245. He showed versatility with being successful at both OLB and DE in his college career. He put up some really good numbers at Pro Day (4.55 40, 38.5" vertical, 10'6" long jump). And he had some solid stats over the last two years (50 tackles, 11 TFLs last season).
Is he too old? Not fundamentally sound enough? Has he played out of position? It seems really weird there has been very little talk of him in regards to pro potential.