1)you can ask tenant to vacate the flat as you require flat for your personal use
2) if he refuses file eviction suit
3) is there clause in your agreement regarding increase in rentals . ?
4) you cannot seek current market rent from tenant
5)As per Section 8 of the Maharashtra rent Act the Court may fix standard
rent and permitted increases in certain cases upon an application
made to it or in any suit or proceedings, fix the standard rent at such
amount as having regard to the provisions of this Act and the
circumstances of the case, the Court deems just.