When you need to do something that's going to upset your listener, you can tell them this way:

I'm going to need to ask you to leave.

We're going to need to hold back on paying bonuses this quarter.

This basically means "I have to do this, although I don't want to.

Another similar phrase is "going to have to":

Just a heads up - we're going to have to meet soon.

But "going to have to" seems less negative.