Olivier Kemen has left Newcastle United for Lyon having failed to make a senior appearance at St James' Park in two years.
The 19-year-old arrived from Metz in 2013, but could not make an impact on the first-team picture under Alan Pardew and Steve McClaren and moves back to Ligue 1 for a reported fee of €750,000 (£550,000).
The fee could rise depending on performance-related incentives and has signed a four-year deal with Lyon.
Officiellement joueur de Lyon