Sources say around 15 new ministers are likely to be inducted in the UPA Cabinet, a few of whom are Mamata's political rivals.
Sources add Pradip Bhattacharya and Adhir Choudhury, both of whom are Mamata's political rivals in West Bengal, are likely to get cabinet berths.
Cabinet reshuffle is likely to take place on Tuesday, Sept 25, informed sources.
The political rivalry between TMC and Congress is out in the open now.
However, Congress leaders deny any "revenge" theory.
"We don't indulge in any kind of revenge against anybody. Cabinet reshuffle will see some smart and hardworking leaders joining Prime Minister Manmohan Singh's team," said a senior leader of Congress.
Some of the top leaders who are likely to get Cabinet posts include, Telugu actor-turned-politician Chiranjeevi, Nationalist Congress Party (NCP) member Tariq Anwar and Congress leaders Gurudas Kamat, Vilas Baburao Muttemwar and Shashi Tharoor.
But those who are hoping that Rahul Gandhi would make it to the Cabinet are likely to be disappointed.
"There is no plan for UPA to induct Rahul Gandhi in the Cabinet," informed sources.
Few post holders who are likely to be shown the gate from UPA Cabinet include Subodh Kant Sahai, Agatha Sangma, Sriprakash Jaiswal, Mukul Wasnik and Beni Prasad Verma.