Munir was an unused substitute for their 5–4 win over Sevilla in the 2015 UEFA Super Cup on 11 August. On 2 December, he scored his first Barcelona goals since his debut, scoring two in a 6–1 win over Villanovense as Barcelona advanced by the same score on aggregate in the domestic cup. On 17 December, starting due to Messi and Neymar's injuries in the semi-finals of the year's FIFA Club World Cup in Yokohama, Munir won a penalty kick when fouled by Guangzhou Evergrande Taobao's Huang Bowen, from which Luis Suárez finished his hat-trick to send Barcelona into the final, 3–0. The South American duo returned for the final, which Barcelona won 3–0 against River Plate with Munir unused.