Ouattara first began his professional career out in France with the Élan Chalon of the LNB Pro A in 2012 as a 20-year-old.

He played with that team for two seasons before signing a one-year deal with the ASC Denain-Voltaire PH, who were a part of the LNB Pro B at that time.

During that year, he helped the team make it to the LNB Pro B Finals before ultimately losing the series to Hyères-Toulon Var Basket.

Under the terms of the deal, he would have planned to split time between the Brooklyn Nets and their G League affiliate, the Long Island Nets, with a majority of his time being spent with the Long Island affiliate team.

[6] On July 20, 2021, he signed with AS Monaco of the French LNB Pro A and the EuroLeague.