To write back what you suggested, but add (upfront):[/b]
"I am not in a good place to receive any negative information right now so if you had something like that you wanted to share, I am open to discussing it, but at a later date. Thanks."
What I see here is that you're borrowing trouble with that approach. We do not know what GUBU wants to talk about at all. So by sending that general text, you'll be able to get some idea of what GUBU wants to talk about judging by his response. Make sense?
We will stay with you here. I'm keeping an eye out for you here.