Depends on all the moves they make. Remember, last year they traded a starter in Happ to plug the LF hole and a DH in Lind to get a guy similar to Happ, but cheaper in Estrada who ended up in the rotation.
Just an example. Also, both Lowe and Hendriks are examples of guys that came out of nowhere to have very good years out of the pen. Now, I'm not saying to count on surprises, but I'm always willing to sell high on a BP arm.
To be clear, I'm not saying give him away for nothing but $aving$. I'm saying see what you could get for him.