This is a relationship question. Your father-in-law wants to make sure his daughter (if I may assume...) has a husband with a stable life, and he wants a reason

This is a relationship question. Your father-in-law wants to make sure his daughter (if I may assume...) has a husband with a stable life, and he wants a reason to maintain an active role in her life going forward. Weird that your post didn’t mention your wife at all. She might be the most important part of this question. How does she feel about this offer from her dad to her husband? Have you asked her? What does your FIL think of your life now – does he think it’s stable? Is he possessive? Is this a way of putting you in his debt so he can have a lever to manipulate you with? How will he react if you decline his offer? In another timeline, if you were single and never met this guy or your spouse, would you have even let the conversation get this far? Are you looking at the opportunity through rose-tinted glasses? I’d lean toward no... it’s not worth mixing business with family.