Issue with the shop

Dear Sir/Mam, My father had started furniture business in 2010 in his own property. He expired last year in May. Since we all are sisters, there was no one to look after the business. So we decided to sell business to manager. The deal was done and executed. He showed interest in renting out our property. However he didn't take it as rent was not affordable. And he left our property in April end 2017. Let me explain one more problem. My father and manager had purchased 2 properties in partnership. 1 is in litigation and 1 is clear. The litigation property is used by manager from past 10yrs. And the clear property, my father had started another business which is running from past 10yrs. Now after leaving our property in April end, when we opened the shop, manager came inside and didn't leave the shop. He demands to transfer clear property on his name n asks us to take litigation property. We tried taking help from police but they are not helping out.Is there any way legally to restrict his entry n not to create further trouble? Or is there any organisation who can help us? We do not have any man in the house who can look after the issues. We don't have much knowledge on legal issues. Can you please suggest what can we do in this case as our source of income has completely stopped. We are not able to rent out property as well. Any help is deeply appreciated.