 Kuzmanović made his Basel debut in the opening game of the season, where he came on as a substitute for Delgado in the 63rd minutes, in a 2–1 win over Vaduz.Kuzmanović suffered an injury when he tore his muscle in his right thigh, in a 3–1 win over Thun on 12 August 2015 and was sidelined for four weeks.After his return to the first team, Kuzmanović struggled to regain his first team place, due to strong performance from Taulant Xhaka and Mohamed Elneny and his return to the club became questionable.