The Corporation decided to end the contract in its council meeting last week.
Sabitra Bhandari dazzled for the champions.
FC Goa beat ATK Mohun Bagan 1-0 in the final Group C match.
The visitors celebrated their winner by paying tribute to the late father of their captain Brandon Fernandes.
Liston Colaco scored a brace for the winners, while Hugo Boumous, Manvir Singh and Kiyan Nassiri also found the mark for the ISL champions.
Earlier, Sreenidi Deccan beat NEROCA FC 4-2 to qualify for the group stage.
In the final played at Wayanad, Kerala United edged Gokulam Kerala 1-0.
Gokulam won 4-0 on aggregate after a convincing 3-0 win in the second leg on Thursday.
The I-League side will go into Thursday's second leg with a 1-0 lead.
Spanish striker Sergio Mendigutxia's 49-minute penalty helped them edge Sreenidi Deccan.