While I don't think we'll sign Clement, I was thinking about the history of players who made their name on one side of town, and then switched. I mean players in their prime or atleast still good switching sides. You see this more in NY with the Mets usually getting Yankee castoffs, not so much here.
Perhaps my history is off but most recently we've seen Garland come to the Sox, but wasn't a real Cub or any kind of star. Sosa wasn't a great player for the Sox, he eventually became good with the Cubs, but at the time he wasn't.
I'm not sure I'm expressing this the right way, but the idea of a guy switching sides while still being a good player is very interesting to me.