when will puck come back [spoiler discussion]

Bros been gone for almost half a year even after getting the perfect mana stone to host him inside, so I was wondering if we will get him back in arc 9 phase 2, Emilia etc. are back in the royal capital, after closing off on arc 8 its the perfect time for Puck to come back...

If he came back I'd wonder if it would be with his memories back or not, so many interesting things could happen if Puck returns, I just hope this doesn't get sidelined till arc 10.