If Allen and Falvey are really on board with the "teach all the pitchers a good changeup" philosophy, bring him in and once it's clear it's not going to work out for Johan which would be approximately February 14th (I see pitchers and catchers report February 13th), see if he wants to, and has what it takes to work with the young guys. Also, I'm not one to want to bring back old players, but Santana's changeup was special. If there's any thought he could teach it, I'd at least be interested.