@YuvrajSingh... hi. Sorry to be so long replying. It's a Windows update weekend and I had lots of server problems to fix. I'm here now for a few hours.
@YuvrajSingh... Yes, that's the point. He wouldn't be thrown out for one offence, but you want it on record that he has done this sort of thing several times.
@YuvrajSingh... I would leave his brother out of it unless his brother approaches you.
This is between you and him, not you and his brother.