Cishek suggested earlier the focus was going to be on pitching in terms of the trade market.
Perhaps they feel they can get Pederson cheap on a 1 year prove it deal after this year and with JR breathing down RHs neck on money issues they may have decided the only way they can realistically add a good cost controlled SP is via trade right now, not the offseason and no doubt JR will require him to show offsetting salary dumps after the season to offset the salary (ie EE, Cishek, Gonzo).