Mohun Bagan became I-League champions after defeating Aizawl 1-0 at the Kalyani Municipality Stadium on Tuesday evening.
Papa Diawara scored the solitary goal of the match late in the second half to clinch the championship.
Kibu Vicuna made three changes to the side that drew 1-1 against Chennai City in the previous game. Komron Tursunov returned after serving a one-match suspension, Dhanachandra Singh was reinstated in the left-back position in place of Gurjinder Kumar and Daniel Cyrus replaced a suspended Cyrus Morante.