One underrated strength that the Bills lost was their depth on the interior of the offensive line. The loss of both Mitch Morse and Ryan Bates on the inside could force David Edwards into the starting lineup. Previously, he was the solid veteran who could play in a pinch.
They don't have that guy anymore and could find themselves in a bind if either of the starting guards goes down for a while.
If they are going to address that need with a trade it might be wise to look at some of the rebuilding rosters around the league. The Arizona Cardinals have made a lot of investments in the offensive line recently as they try to re-tool around Kyler Murray.
Those moves, like drafting Isaiah Adams and Christian Jones and signing Evan Brown could leave someone like Elijah Wilkinson as a luxury they are willing to part with. Wilkinson is 29 years old and has 45 career starts with stops in Denver, Chicago, Atlanta and Arizona.
The Cardinals did just re-sign Wilkinson, but with OTAs underway and all of training camp to figure out where he fits, they might be willing to trade him away at some point.