If it's only been 5 months, and there is a 1 year cliff, I don't see where the issue is. On top of that, he would only have the right to exercise (purchase) options if he wanted to, and you would have no immediate obligation to buy him out of anything at all.
If it's only been 5 months, and there is a 1 year cliff, I don't see where the issue is. On top of that, he would only have the right to exercise (purchase) options if he wanted to, and you would have no immediate obligation to buy him out of anything at all.