The 21-year-old sustained multiple injuries and was admitted to the hospital.
It was Mohun Bagan's fourth successive win and helped them regain the top spot.
Some of their key players are either injured or are serving a suspension
Bidyashagar's 36th minute strike and Pritam Kotal's goal in the final minutes gave the Blasters a 2-0 win.
The 26-year-old has represented Japan at the U-17 and U-20 World Cup.
The 21-year-old from Mizoram has signed a three-year deal with the Yellow Brigade.
The 22-year-old has signed for the ISL side on a two-year contract until 2025.
The centre-back will wear the No. 15 jersey for the Indian Super League side.
The reigning I-League champions have fulfilled the criteria to join the nation's premier men's football league.
The 23-year-old left-back has been roped in on loan from Mumbai City FC.