House property division among 3 brothers

Dear sir/madam Three brothers have ansecteral property of 8 Marla. One brother occupied 4 Marla's and built house. One brother (in this case ourself) has occupied 2.5 Marla for house And some portion of land of third brother for toilet. Now third brother initially said he will not home here and will also give rest of his land to us. But now he is saying he will not give his 2.5 marlas. Now our toilet is in his share of land. Toilet is made after his assurance that he will not take that part or else will take 2.5 Marla's somewhere else. Now he is not taking money only asking for 2.5 Marla's of land. But we are offering money for his 2.5 Marla's. He is saying that he will block our passage to toilet and will create a wall to stop our pathway. I want to know that can he do that?? We r also offering money for only toilet land and pathway. And leaving the rest of his land for his use. But he is saying he wants full land share 2.5 Marla's at other place and not agreeing on taking money. Pls suggest?