It's a salary dump if you're sending more salary out than you'd be taking back. Unless the Cubs pick up all of his contract, It'd still be a salary dump. Not much of one, granted. It would also depend on what their plans are to replace him. If both Soriano and Byrd are moved they're almost certainly going to have to trade for or sign another OF, in which case they could easily be paying more for that new OF AND Soriano than what they're paying now.