Kuper wasn't at 100%.. He missed some significant time, both game and practice. He wasn't in game shape and didn't look like himself. Agreed he didn't play well, but Beadles stuck out like a sore thumb more often than not during the season.
What is the benefit of getting rid of Kuper if healthy? It's not like we are cap strapped.. His ability either in the starting line-up or off the bench would prove very valueable in a pinch.