At a time when many I-League clubs are unclear about their future, former India captain Bhaichung Bhutia says there would also be a "big question mark" over the future of the Indian Super League (ISL) unless it accommodates clubs which have "history, passion and fanbase".

"For ISL also, it's very important that clubs like East Bengal and Mohun Bagan are there. It's not just the future of I-League. The future of ISL is also in big doubt. There is a big question mark," Bhutia told IANS.