7.From a reading of the above provision, it is clear that if the parties to an existing lease had not entered into an agreement within 575 days as requierd under Section 2 of Sub-section 4, that by itself will constitute a ground for eviction. Clause(a) of Sub-section 2 of Section 21 does not make a difference as to who was responsible for non-execution of the lease document. The fact that the landlord is unwilling to execute a lease document does not make a difference. If a lease document is not entered within 575 days from the date of coming into force of the new Act, even if the landlord is responsible for such non-execution, the nonexecution simplicitor gives a right to the landlord to seek eviction. Therefore, the claim of the tenant that he was willing to execute the lease deed, the landlords were not coming forward to execute the same, even assuming it to be true, does not make any difference.