Mohun Bagan were defeated by Shandong Luneng of China in the preliminary round 2 of the AFC Champions League and were eliminated from the competition at this stage.

Right before the start of the I-League Bagan smelled a breath of fresh air with Indian international Jeje Lalpekhlua and Mumbai City midfielder Brandon Fernandes confirming their association with the Green and Maroon brigade.

Bagan started off their I-League campaign with a 3–1 win over minnows and newcomers Aizawl, where Glen scored a brace while Balwant Singh netted in the third.

In a match that saw a series of missed chances by the Green and Maroon brigade, it was the magic left foot of Sony Norde that proved fatal for the Tampines Rovers.

The Mariners wrapped up the month on a high, in their first away match of the I-League at the Balewadi Sports Complex, Pune drubbing the new league outfits DSK Shivajians 2–0, courtesy of a brace from Sony Norde.

Jeje Lalpekhlua and Sony Norde found the back of the net in the match and this win propelled Bagan to the 2nd position in the I-League table.

They guaranteed that they stay at the top at mid-season, when they defeated Sporting Goa 1–0 in a home game, courtesy of the solitary goal from their captain for the match, Katsumi Yusa.

Mohun Bagan kicked off their AFC Cup campaign in style as they demolished Maziya of Maldives 5–2 in a home encounter at the Indira Gandhi Athletic Stadium, Guwahati.

The Green and Maroon brigade started off the month with a 1–1 draw against Sporting Goa in an away encounter which ensured they maintained the top spot in the I-League after 10 matches.

[2] Sanjoy Sen made the comments after the AIFF refused to reschedule Mohun Bagan's I-League match in spite of their close schedule in the AFC Champions League.

[3] Mohun Bagan continued their AFC Cup campaign in style when they travelled away to Hong Kong and convincingly defeated South China 4–0, courtesy of goals from Jeje Lalpekhlua, Cornell Glen, Lenny Rodrigues and Sony Norde.

The Green and Maroons continued their amazing form in the AFC Cup with a 3–2 victory over Yangon United at the Indira Gandhi Stadium, Guwahati courtesy of a brace from Jeje and a sublime header from Sony Norde.

On 31 March 2016 the AIFF Appeals Committee reduced the suspension of Sanjoy Sen from 8 matches to 4 and halved the amount of fine payable to Rs.

In the final moments of the match Bagan got a golden chance to draw level from the penalty spot but a feeble effort from Jeje Lalpekhlua was saved by the goalkeeper comfortably.

Jeje Lalpekhlua and Katsumi Yusa gave Bagan the lead twice in the match but a late last minute equaliser by Uilliams Bomfim Souza broke Green and Maroon hearts all over the country.

Mohun Bagan went ahead 4–0 within the first 30 minutes of the match, courtesy of goals from Glen, Lenny Rodrigues, Luciano Sabrosa and the young Azharuddin Mallick.

Mohun Bagan secured their spot at the top of their group in the AFC Cup when they managed to salvage a point against Maziya with a 1–1 draw.

Mohun Bagan started off the month on a positive note when they defeated Salgaocar in a quarter final away encounter of the Federation Cup.

In the return leg of the quarter final tie, the Mariners demolished Salgaocar 4–0 riding on a brace from Haitian playmaker Sony Norde and goals from Katsumi Yusa and Jeje Lalpekhlua.

Mohun Bagan's 'unbeaten at home' streak came to an end with a demoralising 3–0 loss against South China in their final, but inconsequential group game, in the AFC Cup campaign.

In the return leg away encounter of the semi-final of the Federation Cup, Bagan played out a 0–0 draw with their opponents Shillong Lajong to secure a place in the final, by virtue of a 5–0 aggregate score.