Yeah, that not smart team didn't get 2+ WAR so far for about $1M + cash considerations so far.
I don't think anyone is suggesting an extension. That would be attachment. If the Twins want to contend, they need players who provide roster flexibility at relatively inexpensive prices. Clemens is doing exactly that right now. He's more valuable to the Twins than what he is going to net in a return right now. Go look at the guys they got for Castro. They aren't exactly screaming solution provider in MiLB right now. Will Clemens even get them that? I'm doubtful.