[8][9] Do started the season in the 2015 Calcutta Football League where he scored 12 goals in 10 appearances, helping his team to clinch the title, including a brace in the 4–0 derby win over Mohun Bagan where he scored 2 goals both from a free kick.
He also played an important role in the return league of 2015–16 I-League in the match against arch rivals Mohun Bagan as he scored two goals one from a spot-kick and the other one by dancing past two defenders at Kanchenjunga Stadium of Siliguri.
[12] On 17 November 2016 it was announced that Do had been released by East Bengal after failing to impress head coach Trevor Morgan.
[18] On 23 November 2017, Do signed a two-year contract with the Malaysian Malaysia Super League side Kelantan.
Do scored a hatrick in 3–2 win over Perak on 24 February 2018 at Sultan Muhammad IV Stadium.