On 27 August 2010, Coutinho made his official debut for Inter coming on as a substitute during the "Nerazzurri"'s 2–0 defeat to Atlético Madrid in the 2010 UEFA Super Cup. After dropping out of selection in the starting line-up, he returned to play in the crucial 3–2 win over Bayern Munich in Germany, due to which Inter would progress to the quarter-finals of the UEFA Champions League.