I'm going to assume you're joking. Unless Saves are extremely devalued in your league for whatever reason, even considering dumping a guy like Cordero would be a rookie mistake. When you get past the upper tier of extremely expensive closers, Cordero's one of the best options out there. Yeah, he hasn't gotten a lot of opportunities early, and when he has gone out there, he's looked rusty. Well, yeah, he probably is. But the opportunities will come. The Nats may not win a lot of games, but when they do win, they sure aren't going to be blowouts. You may not have had any luck dealing him, but my guess is at least half of your league would put in a waiver claim if you dropped him. Without seeing your roster, this is one of the last guys you cut.