If he is to be a starter, no way you give him 500 at bats to injure himself running the bases and fouling off pitches. NL makes more sense to me, gets a chance to hit every 5th day and could be a huge PH weapon if used correctly. Otherwise he would have to ditch pitching or maybe relief only, which wouldn't really be worth it if he has arm issues that impact his viability as a everyday position player.