Samuelsson has averaged 50 points a full season since he left Detroit. If he's healthy there's no reason to think that he wouldn't score 45 or so, and he adds size, something that's sorely lacking on this team.
How much is sitting in the pressbox is completely irrelevant as long as they're ok with the cap, and the lines can be configured however you want. If they find someone who wants to trade for Samuelsson that he'd waive his NTC to go to, or trade Tootoo, fine. If not, absolutely waive Eaves. He's a solid checking line winger who can kill penalties, but he has a history of concussions and his days in Detroit are numbered, especially after they signed Miller to his 3 year extension. If Helm is healthy and they move someone else, they might choose to dump Emmerton instead. If Helm is going to be out for awhile and they can't move anyone else, Eaves is first in line. He's better than Emmerton, but Emmerton can play center and they'll need that if Helm can't go.
Eaves has a history of concussions? He had only one concussion that i remember. He got it when he broke his jaw and then had post concussion syndrome