Olivier Kemen left Newcastle United for Lyon in 2015.
Could Newcastle take a chance on former youngster?
The Championship side have already made multiple signings this summer.
The former Newcastle youngster and current goalkeeper took to social media after a 1-1 Tyne-Wear derby stalemate.
The Newcastle United man had some kind words for his former team-mate.
Rolando Aarons is on the books of Newcastle United at the moment, while Olivier Kemen is at Lyon.
Former Newcastle United youngster Olivier Kemen also took to social media, alongside current winger Rolando Aarons.
Olivier Kemen says Newcastle made his move to Lyon difficult.
Kevin Mbabu made his debut for Newcastle United against Chelsea in the Premier League on Saturday evening.
The 19-year-old netted for Lyon's academy but is yet to become a first-team member since leaving Newcastle United.