He contributed with 26 matches (one goal[2]) as the club promoted back to the Primeira Liga, but appeared significantly less in the following year.

Trofense[3]– second level, less than one third of the matches played – Ouattara left Leiria and signed for Nîmes Olympique in the French division three.

[4] In the following campaign he moved teams and countries again, joining Bulgaria's PSFC Chernomorets Burgas after a period of trial.

Ouattara made his debut for Burkina Faso not yet aged 19, helping to a 1–1 home draw against Mozambique on 24 March 2007 for the 2008 Africa Cup of Nations qualifiers.

He was selected for the 2013 edition of the tournament on 8 January,[6] playing against Togo in the quarter-finals[7] in an eventual runner-up finish for the nation.