Tim Settle Jr.
The Buffalo Bills realistically have five players at defensive tackle that would be deserving of a spot on the 53-man roster but might only have four available, depending on how they build out the roster. It looks like Ed Oliver, DaQuan Jones, and Poona Ford are locks with the final spot coming down to Tim Settle Jr. and Jordan Phillips.
Phillips hasn't been able to play much this preseason as he works his way back from offseason shoulder surgery and Tim Settle Jr. has bounced back after a disappointing first year in Buffalo last season. However, the reason that Tim Settle Jr. could be the one traded is that most teams probably wouldn't be interested in a trade for Jordan Phillips with his injury history.
Meanwhile, Tim Settle Jr. is still young at 26 years old and only has one year left on his contract. He has looked much better through the three preseason games and I would imagine teams would be willing to offer a Day 3 pick for a player that could play 30-50% of defensive snaps.