I hope the team brass is wise about this - - It is foolish to trade Boutte right now. Period.
There is no reason to jettison away one of the 3 best WR's (maybe #1 re: chemistry with your star QB) when:
1. Doubs has not shown 1/2 the amount of connection with QB, nor comfort within this new system.
2. KW hasn't proven to be a well-rounded WR option yet
3. Injury will almost certainly hit the WR corp at some point
IF the room is fully healthy, and IF Doubs & KW are progressing, then maybe consider it in Oct for the trade deadline to max his value for a desperate team. But that's it.
Sure, you won't pay him FA dollars after this season, but he could either help you get to (and win) the playoffs - OR, you need to get a max return for him after ~4-6 weeks, to fill a weak spot on the team.