Mamunul announced his retirement from the National Football

September), so he announced. In this regard, the Bangladesh Football Federation (BFF) will submit a formal resignation.
Mamunul told reporters at the BFF Bhaban, Bhutan's squad due to injury since the decision was taken. The official also said the resignation Mamunul soon.
The AFC Asian Cup qualifying match against Bhutan on September 6 playoff squad ahead BFF II. Bangladesh national football team because of injury did not keep the midfielder Mamunul Islam. September 1, held in the Maldives in the last qualifying match for the same reason was not to lead the national team players.