friend bought a property already L/O'd to someone.

I was talking to a friend / fellow investor this weekend. He bought a property that had a 7 yr. lease option on it to someone else. The people have quickly fallen 2 months behind on payments, and are upset that the property was sold. He has explained to them that he intends to honor the L/O, but they continue to not pay. What happens with this? Is he able to evict them (he doesn’t want to, but may not have a choice)? Are they still obligated to the L/O signed with the former owner? Does he need to have them sign a new L/O? If they don’t, can he give them notice immediately? Any advice from someone qualified in this type of area would be appreciated.

Thanks.

no one have any idea on the legality of this one?

thanks