If it was my family's land I would ask him to move it. But that is just me. I am greedy that way when it comes to hunting. You can't ever tell just who you are out there hunting with. You don't know if they take wild shots or make a lot of noise on stand or leave scent everywhere etc etc. Therefore, I don't want them on the property ruining my hunting. Spots are limited and I take this stuff serious and I don't want someone else interfering with that. I don't mind sharing my spots with friends (and I don't use that term loosely) and family but I don't want anyone else around them. But, since you don't want to kick him out I would recommend that you go and talk to him and tell him what you are thinking about. Tell him you got your stand up and then found his stand. That way there won't be any hard feelings. If he gets rude about it, you may just change your mind about whether you want him hunting there at all