If he wants to go to Aberdeen then fine, thanks for everything and good luck. What will grate with me is if, whilst still under employment at Motherwell, he encourages Buzz, Shug and Maros to sign for another team ie Aberdeen.
If he does then he'll lose a lot of respect from me, and would be in my opinion, in breach of contract and due to be sued! It wouldn't surprise me if he does try that though, underhand though it is.