True, but what happens if Renteria craps out in 2008, and the Cubs decide his option isn't worth picking up, what then? You would have traded a valuable young arm for a 1 yr rental. Not a good deal. You need protection in case the deal doesn't work out in your favor. Of course, I believe the O's should send a prospect to the Cubs in the Roberts deal, if they are pushing Jay Payton on us. That goes without saying. Now who's making assumptions?