Just my theory but I don’t think they’re looking at traditional “4-3 RDEs” like we had last year with Quinn. Yes Mccarthy has said “we’ll be a 4 down lineman defense” but I think it will still be a multiple type D. The best pass rusher on the right side may actually end up playing weak side linebacker. On the left it will be Tank. Think of Tank as a linebacker on the left but starting with his hand on the ground & rushing most of the time. When the weak side linebacker (standing up) rushes it would look just like a 3-4 defense with both OLBs rushing. When he drops back it looks like a 4-3. Instead of two 5 techniques and a traditional nose you have Crawford, Poe, and Mccoy as the 3 inside guys playing 4, 1/0, and 3 technique respectively. Hence the reason why they may be keeping Crawford on the roster. In this situation you’d want a guy 285-290lbs playing RDE or “4 technique”. Question is, who is the rushing weak side linebacker? Jaylon with Lee and LVE in the middle? Gregory with Jaylon and LVE in the middle? Rookie? Either way, I think this definitely opens up options and is not as predictable.