The Ivory Coast forward, who turns 22 on Thursday, was previously with Etoile du Sahel in Tunisia and has been in prolific form this season.
He is the third new signing made by Celtic this month following the arrivals of Oliver Burke (West Bromwich Albion, loan) and Timothy Weah (Paris Saint Germain, loan).
Download the new SPFL app now for access to all the latest Scottish football news, social media updates and video content, all in one place. Available for free from the App Store and Android stores and also HERE.