Mohun Bagan won by a solitary goal against their arch- rivals last month but since then they have slumped to sixth in the table and have parted with their I-League winning coach Sanjoy Sen.
"East Bengal are way ahead of us," Chakraborty told reporters in the build-up to the derby.
Injuries to key players, including their star striker Sony Norde, have deflated Mohun Bagan's campaign as they have managed just six points from six outings.
"You just look at the table. They have lost only one match. Their coach (Khalid Jamil) has a lot of more experience than me, having coached at Mumbai FC before winning I-League for Aizawl FC (last season)," a modest Chakraborty added.
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"They have not lost away match. Their team combination from defence to forward is much better than us."
Mohun Bagan have not ruled out Norde for their derby match.
"He has a chance. We are in constant touch with the medical team but we have our plan B in place in case he doesn't recover."
"I'm not thinking about myself. It's about the team. Everybody stands for the team. The challenge is to win for Mohun Bagan and we will try our best," he signed off.