I'm not normally one to say this kind of thing but Watch Sheahan follow up his absurdly unlucky season with an unsustainably lucky season. Holland will obviously lock him up with term at that point lol.
In general, I agree with conseus that it's a poor time to trade him. I'd imagine the same people calling to trade him now will complain about Holland's asset manage a year or two from now when Riley's rebounded to the level of a solid #7 forward.
This.
With limited cap space and no guarantee for a worthwhile replacement on the UFA market, I would bet Holland is hoping Sheahan has a rebound so he can lock him up cheap. Probably in similar fashion to when he gave that bonehead 4 year extension to Kindl.
On the 2nd point, I do agree that a Sheahan trade for "whatever Holland can get" would likely be damned if you do and damned if you don't. Sheahan is likely to have a better season next year, whether in Detroit or somewhere else. On the Pens, if Sheahan skates between Hagelin and Kessel with actual quality puck moving dmen behind him, he'd easily put up similar numbers to Bonino and then sign up to some affordable term with them. Meanwhile in Detroit, Holland would be scrambling to overpay Filppula or Matt Stajan next July, which will be lamented by the same fans that begged for him to get "whatever he can get" for Sheahan. Then that "whatever he can get" pick becomes a marginal depth player in GR for a few years with no impact what so ever.
So the Sheahan situation is a double edged sword for Holland. If Kenny trades him now, he likely improves upon his 2G 1.8% season and ends up being more valuable to his new team than "whatever Holland can get". This will put RW fans in a fit over asset management/etc. On the other hand, if Holland keeps him, he improves on that season here, prompting Holland to give him a mild raise for a decent term. This will then put RW fans in a fit over having another longer term contract on the books.