On 15 May 2015, Atlético de Kolkata's board announced that they would retain former Bolivia and Valencia CF manager Antonio Lopez Habas for the 2015 season.

On 5 June 2015, the team acquired Canadian international forward Iain Hume, whose five goals had helped Kerala to the final of the previous season.

[4] In the second season's domestic draft, Atlético de Kolkata had the first pick, choosing Pune F.C.

On 4 November, the team decided to sign last year final's goalscorer Mohammed Rafique replacing Lalchhawnkima who was ruled out due to Dengue.

[7] On 11 November 2015, the team announced the signing of Serbian international Dejan Lekić to replace injured Josemi[8] On 16 November 2015, the team announced replacement for another injured player Javi Lara, who found it hard to recover quickly from a groin injury.