My mother wants to claim her Home back - Property Matter

I am Abhishek (younger son) and i live in Pune. My home is in Patel Nagar, Patna. Land is on the name of my Mother and She wants her home back. but My big brother & his wife don't want to leave the Home and his intentions are wrong/bad because i don't live in Patna and The home construction is not in the way that can be divided between us two brothers. Also, they are mentally harassed my mother in past. My mother wants him to evacuate the home. So she can sell it to any third party. My mother and father, both are senior citizens. Note: My father built 2 floor around 20+ years ago. bt 3rd floor has been recently built (in a good manner), in which my father, elder brother and me has contributed equally and also a Loan is running (we all are paying EMI equally) Loan: its on the name of Elder brother and My mother. Also land's paper are with bank. Need Suggestions: 1. what should my mother do to evacuate him from home. 2. how much rights my mother has to sell the home to any 3rd party. 3. what action my elder brother can take legally, if my mother decides to go legally. 4. elder brother is in gov. job. So does any legal action from my mother regarding home can/will affect his job too? Thanks for the help