The Bucks has a team option on Brian Skinner, which mean a 99.9% chance they'll just let him walk this summer. For the Bucks to do this deal, they'll likely try to dump Dan Gadzuric or even Bobby Simmons on us instead.
From the Bucks' perspective, they can just let Skinner walk and use the freed-up cap on a Shane Battier type player and still keep the #6 pick.
Now that I think about it, once they let go of Skinner, they'll be about $24 millions under the cap. That's enough $$ to re-sign Mo Williams and make a run for Rashard Lewis/Gerald Wallace. If they sign a big-name SF, they pick a big man with the #6; and suddenly they're one of the best teams in the east.