Yeah, the only way the Mets were ever going to give him a September callup was if he and they had understood that he was done with the baseball fandango after the season. If they want him to continue this career, by all means, keep him off the 40 until he's ready to help the team. A September callup in 2018 would be a raging success, and just about in perfect alignment with the best-reasonable-case timetable. If the Mets want to call up an extry outfield dude for the remaining games, I would recommend Travis Snider.