MLBTR Chat Transcript: 2/9/17

Had this with Javier Lopez in mind regarding the Giants. I imagine something like this would have to be negotiated through the CBA. Would these player/coaches be exempt from the 40-man? Under what exact circumstances would they be activated at the MLB level? How would they be paid (as MiLB player coach vs. as MLB player)? What eligibility should these player coaches have? Say, at least 35 years old and at least six years MLB experience?