Mbappe hobbled off in the first half of Friday's game after a dreadful tackle by Saint-Etienne captain Loic Perrin.

And after tests PSG revealed that he had "a sprained right ankle with significant ligament damage".

The news is a major blow for PSG with Mbappe out of next Friday's French League Cup final and unlikely to be fit in time for next month's Champions League quarter-final against Atalanta in Lisbon.