NorthEast United Gallego was loaned from
Boston River to
NorthEast United for the
2018–19 Indian Super League. He scored a goal on his debut for NorthEast United against
Goa. Along with teammate
Bartholomew Ogbeche, he formed one of the best attacking combinations for the club. Gallego won the ''Fans' Player of the Month'' award for October in an online poll conducted by the league. On 21 September 2020, Gallego signed a contract extension, keeping him at NorthEast United until the end of the
2020–21 season. Gallego won the
Hero of the Month award for January in an online poll conducted by the league. He finished the season with 4 goals and 6 assists in all competitions, becoming NorthEast United's all-time single-season top assist provider. On 29 September 2021, NorthEast United and Gallego agreed to a one-year contract extension for the upcoming season. On November 29, Gallego was drafted in the starting XI for the first time this season against
Chennaiyin FC. In this match, Gallego was involved in a clash with Chennaiyin FC’s
Narayan Das. Gallego had his knee injured in the coming together and was carried out on a stretcher. He was ruled out from the season due to his knee injury. For the
2022–23 season NEUFC decided not to retain Gallego after the club wanted to create a new policy. Fans call him as the "King of the Highlands" for his successful contributions to the club.
Sud América On 3 September 2022, Gallego joined
Uruguayan Segunda División club
Sud América. == Career statistics ==