Mateo or Marmol for Church would be ideal. While we are in the market for pitching, we could deal one of Mateo or Marmol and still have Guzman, Ryu, Marshall and the one of that pair not dealt for the lower end if needed. Church might be able to take over CF full-time, and if not he'd be more valuable as a fourth OF than the pitcher would be for us. The Nats aren't going to contend, so they could be more patient with the pitcher as they struggle in the majors. If the Nats would bite, this one appears to be a no-brainer.