Ejected Coach...first time facing since ejection

[Lotto]

Eject him again.

Seriously, though, if the coach says nothing, say nothing.

If the coach apologizes for his behavior from the previous game, politely say thank you, but that you've put it behind you and that you start every game with a clean slate.

If the coach tries to engage you in some discussion about the ejection to argue your call, politely say thank you, but that you've put it behind you and that you start every game with a clean slate.

If the coach crosses the line despite your insistance that you've put it behind you and that you start every game with a clean slate, then you need to oblige him with the T that he has decided he needs to have.

I wouldn't expect this last case to occur.