Denayer has left City to join Olympique Lyon on a permanent deal.
The Belgian international is looking to push on with his professional career having never made a senior competitive appearance for the club.
Despite being out of favour with Pep Guardiola Denayer was a member of the City squad which travelled to America for the pre-season tour, where he made two appearances.
Denayer moves to France following a successful loan-spell at Turkish side Galatasaray last season. During his spell in the Super Lig the 23-year-old made 22 first-team appearances and scored one goal.