I don't think he's been THAT bad Geez he's played like 37 games over the last two years? Out of a possible 46 that's not so bad.
Deledio is about the same, are we going to trade him?
Personally I would trade Cotchin and Deledio before Grimes - at least you know you'll get great picks for those two. Grimes would be unlikely to get us a 2nd round pick...