Mohun Bagan reached the semifinals of the Super Cup where they were defeated by Bengaluru.

Sanjoy Sen resigned as the coach of Mohun Bagan on 2 January 2018 following three home draws and a defeat against Chennai City placing the team in 4th position, virtually ending their title hopes.

[1] Shankarlal Chakraborthy was appointed as head coach for the remainder of the season.

Despite a midseason coaching change and injuries to key players like Sony Norde and Yuta Kinowaki during the 2017–18 season, they won both the home and away fixtures against arch-rivals East Bengal.

As of 3 December 2017 Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.