Please don't get me wrong. Killorn is not a star and he is not untouchable, but you don't just throw away .5 PPG players (exactly 60 points in exactly 120 games) who can also play a physical game and are solid in the defensive zone. Guys like Killorn don't grow on trees and we shouldn't just throw him out as scraps in a trade.
It's also important to remember that his season was going very well until Stamkos got injured. That's when we tried to switch him over to center and it turned into a trainwreck. He never really found his game after that. He still has some offensive upside.