On 2 October 2013, Boateng picked up a red card against former club Manchester City which resulted in a one-match ban in the Champions League. His only league goal of the season was on 9 November, finishing a corner after four minutes of a 3–0 home win over FC Augsburg. He extended his contract with Bayern on 11 December, which will keep him at the club until 2018. On 3 May 2014, Boateng picked up a red card which resulted in a two-match ban. Bayern ended the season as winners of a domestic double of the Bundesliga and DFB-Pokal. He scored a goal in 43 appearances during the 2013–14 season.