Best way to capture this deal? Land contract ?

[Ryane Johnson]

House ARV is 920k. House needs nothing but seller needs 805k. It's that spot where it doesn't make sense to use hard money but there is some meet on bones there with something creative. He wants out by mid March and does not want to list house etc.

His motivation is that his wife died and he just can’t deal with the memories there. He has found a house already.

My thoughts would to give him some money down to get him out and then put in market. What is best way to control the deal and protect whatever I put down?