I agree that Shark should be considered for an extension, but from all accounts it seems like he's not interested in signing an extension. I seem to recall the FO saying signing Samardzija to an extension this past offseason was a priority, but Samardzija wasn't interested. If that's the case, and he'd rather test free agency, then trading him while you can get the max return for him possible is not a bad idea. My understanding was that he wanted too many years and wouldn't back off of a NTC.