Regardless of the result, Tuesday's AFC Champions League qualifying playoff against Iran's Zob Ahan will be a milestone for Aizawl FC.
2017 SeasonAll times ET
Midfielder Mahmoud Al Amnah says the trip to Aizawl will be emotional, but his sole focus will be on helping East Bengal win.
Aizawl have not had the best of starts this season, but against the league leaders Minerva Punjab, they turned back the clock to 2016-17.
Despite a dominating 1-0 victory against Churchill Brothers, Aizawl's coach Paulo Meneses will be worried by his team's poor finishing this season.
William Lalnunfela's star turn brought Aizawl back from the brink and helped hold East Bengal to a 2-2 draw in the season opener for both teams.
With two leagues running simultaneously, I-League will find it increasingly difficult to compete with ISL, but there's hope for younger players.
As the I-League completes 10 years, ESPN's writers pick their memories of matches or moments that they witnessed first-hand.
Defending champions Aizawl FC begin their title defence away to East Bengal, while the first Kolkata derby of the season will take place on Dec 2.