thanks for reply Leo.
Its a a house in Pre '64 units.
As you point out, the seller would prefer to not have the tenants not affected condition. There is no break out clause in existing rental contract. That contract ends in 2020 Q3.
The question is does that only apply if new owner will continue to rent property, or does it also apply if new owner intends to use as primary residence (and has to wait until natural end of pre sale rental contract),
thanks again,
Brian