Canadiens need a power forward; Sabres get a forward who would put up similar numbers this season and add depth to their defence.
Taylor Pyatt for Marcel Hossa and Ron Hainsey
Bit much for Pyatt although I wouldn't mind him in Mtl. But Hossa since the recent critics from coach Julien started to take it up a notch in pre-season, playing with more grit, going strong in the corners and even delivering some hits. At this point he's almost guarenteed the 2nd line LW spot to start the season. Let's see where that takes us. He's also big and fast so... I beleive Hossa will shut all his detractors up this year.
Losing him AND Hainsey for Pyatt is the kind of risk a team in rebuilding mode like Montreal will not often take.