I gotta figure the problem here is that Boozer is going to expire, the Pistons won't be a contender this year, and then he'll almost certainly be gone. Prince is still signed for another year, and is a little more affordable. He's also a popular player, good teammate, strong defender, pretty much everything Boozer isn't even though he'll never be a 20/10 guy.
Me thinks Boozer's value is dropping every year. Between his Cleveland fiasco, Utah wanting to unload him, his lousy playoff numbers, injury prone, lack of defense... there's always a market for legitimate 20/10 skills, but he might not be tops in that group. Detroit can be patient, and doesn't need to jump at this deal.