Couple thoughts:
-Yeah, signing Bell and trading Rowdy doesn't make much sense to me either. If Rowdy had big trade value, sure, but he doesn't.
-I would not have been happy if the Brewers signed Bell to this deal without regard to Tellez. 2/33 would be fine, but the opt-out is a killer. He has a great season (great) and then leaves (not great). Not a huge fan of one year deals if avoidable. Not to mention the fact that if he stinks or gets hurt you get to pay him again. I Hate player options.