Renting to a prospective purchaser?

Hi all, I am in the process of selling my mother’s house, which is empty and have had a prospective buyer since March.

However, there have been some problems regarding the sale and this has caused the transaction to take much longer than usual and may still take another 3 to 4 months for completion.

The purchaser is keen to continue with the transaction, but has now asked if it would be possible if he could rent the house until completion. He is renting at the moment and has said he would have to give one month’s notice but he would like to move as soon as possible and has asked if I would consider this as an option.

I am a landlord so I understand the basics of letting properties but have never encountered this before so not sure if it would be wise.

Part of me thinks it’s a good idea but the cynic in me says it’s not!

I would appreciate any advice please.

Ashleigh