His brother-in-law, Abul Kashem, was the director of WAPDA SC and provided financial support to Bablu during the early stages of his career.
The following year he played for the club in the Dhaka Third Division League, which was the first time Brothers Union entered professional football after the 1971 Liberation War.
"Bablu attracted the interest of Sheikh Kamal, who invited him to join Abahani, and though the deal was agreed by both clubs it later collapsed after the 15 August 1975 coup d'état.
Although during his time with the Oranges he failed to win the league title, Bablu was part of the Brothers team that were joint champions of the first edition of the Federation Cup in 1980, during which he was the club captain.
Bablu was also part of the team that became the first Bangladeshi side to win the Aga Khan Gold Cup, although both titles were shared with Mohammedan SC and Bangkok Bank, respectively.
During their Aga Khan Gold Cup triumph, Bablu scored in the semi-final against Oman XI in a 3–1 victory.
[1] In 1983, Bablu left Brothers Union after Mohammed Mohsin's injury lead to a slump in the club's form.
With Abahani, Bablu won his only First Division title during his lone year at the club, before moving to Dhaka Wanderers in 1985.
[1][4] In 1975, the same year when Brothers Union made their top-tier debut, Bablu got a national team call-up from Abdur Rahim who was the Bangladesh's coach at the time.
[1][7] In July 2006, he replaced Andrés Cruciani as Bangladesh interim head coach, for the second half of the 2007 AFC Asian Cup qualifiers.