I honestly think that unless a good deal comes along we shouldn't trade Howard until next season. For a bunch of reasons.
1) Mrazek has been shown to get overworked. We need a backup that can play those games if Mrazek falters. Not because winning them is important but so Mrazek doesn't get played when he's doing poorly. Goalies can lose their confidence and be ruined forever if they have a long bad stretch. If Mrazek has three bad games we need to sit him so he can find his game again and come back confident. We need a decent backup if we're going to be doing that.
2) Howard's value has literally never been lower. Every year off his contract and he becomes more valuable. He can be sold as reclamation project if his contract wasn't so long. If we wait a year his contract will look better.
3) continuing the value idea, he could adapt to being more of a backup and play well. If he does this his value will spike.
4) we shouldn't trade him during the off-season because most teams will have another way of addressing their goalie situation. If approaching the TDL there's a contender who's starter got hurt we could get a much better deal for Howard.
1. When has he shown this? That's like saying Larkin has shown this, when in reality, all either player has shown was that they need to get accustomed to playing a lot of games. They simply never have before, due to injury, season length, playing backup in the pros as youngsters, etc.
2. Not a bad point but still risky. Maybe every year he becomes more valuable. Or maybe the benefit of his shortened contract is offset by continued deteriorating, or doesn't even look like a starter anymore and destroys the idea that he could rebound, or encounters injury problems, etc.
3. How on god's green earth is solidifying his role as backup going to boost his value?
4. No contending team that already has a bona fide starter is going to trade for a $5M goalie with 2 years left on his deal.