No, for a couple reasons.
1) Because I think right now this is a 3-13 team and already headed for the #1 overall pick. Top 5 would be an improvement.
2) If we really wanted to get rid of Davis, we could franchise him again and then trade our first and two seconds to move up to get Long and/or Baker. But since I would have predicted greater improvements for Davis under Grimm/Whis than many forsee for Brown, I think that we wouldn't be looking for a new LT, anyway, and we'd be happy paying $50 million for a guy that made his first Pro Bowl.