Martínez started the 2013–14 campaign on the substitutes bench, under new manager Pep Guardiola. On 30 August 2013, in that year's UEFA Super Cup, he took the pitch early into the second half of the match against Chelsea, and scored the 2–2 equalizer in the last minute of extra time, as the Bavarians went on to win the trophy in Prague after a penalty shootout. Martínez finished the season with one goal in 34 appearances.