a700 has brought up a very good point all season long. With the extra wildcard spot, there are more teams that are going to be trying to get that extra piece at the trade deadline. The cost for quality players is going to be at an extreme premium.
Personally, I'm starting to believe that there is a deep problem within the chemistry of this team. There are a lot of problems, and one or two more overpaid pitchers aren't going to solve them.
Trade Beckett and his fried chicken. Trade Youkilis, and his broken body. Trade Salty and his 6.00+ cERA. Even trade Dice-k, who may suddenly have value if he'll waive. Get whatever value you can for any single member of the bullpen besides Aceves. Fire Valentine. Load up on talented players that are a year or two from the majors, and make a run.