Sow played youth soccer with the Gloucester Hornets SC, before joining the Montreal Impact Academy at U13 level.

[6] In the 2021 CPL-U Sports Draft, Sow was selected tenth overall by HFX Wanderers of the Canadian Premier League.

[7] In June 2021, he signed a developmental contract with HFX Wanderers for the 2021 season, allowing him to retain his university eligibility.

[8][9] On August 31, HFX announced Sow was returning to the Carabins and the University of Montreal.

[13][14] In February 2024, he re-joined the Wanderers on a fully professional two-year contract, with an option for 2025, after having last played for the club in 2022.