Rules of Serie A forbids a manager coaching more than 1 team per season (official games) in a same league, it's been that way for like last 30+ years. So GP cannot coach anyone else this season, except if we don't choose to reactivate him. That's why lots of bottom clubs (think Palermo with Balardini, Genoa with Ivan Juric) keep rehiring same coaches during a season, because these coaches can coach only them that given season. Or of course they can get a job in Serie B or abroad. Hope this clarafies things a bit.