I'm just spitting into the wind here, but ...
If the Bruins are not in the playoffs and not fighting for a wild card spot come the deadline then they should trade Coyle.
If they are in the playoffs or in the hunt, Coyle should be traded in the off season .
Coyle can be a good 3rd line center, but recently he has been misused by not using him to his strengths and trying to make him into something he is not.
Yes, that is an opinion, but if they insist on him being something he is not then trade for someone who is, or another need.
He will have a year left on his contract and hopefully will bring more in return than if he were a rental.
The reason being that what he brings to the team the Bruins have other players that could do the same, and maybe more, if given a consistent chance.
I could easily name 5 or 6 other players, not named Lindholm or Zacha, currently on the roster that could step in and play third line center right now. Keeping Coyle will in the long run block the development of some of these other players.
Coyle is a luxury, above average, 3rd line center on a true contender.
If the Bruins are not a true contender he becomes expendable.
Coyle is a good player and could bring a decent return especially from a contender.
Sure, he has had a good run here in Boston, but adding in age, tradeable cap hit, it may be time to move on.
Either at the deadline or the off season.