When Al Neri asked Michael, "You want him to leave now" about Pentangelli, was he asking whether he should kill him?

I have just noticed that there's been a comment posted recently mentioning this particular line in the movie, but I wanted to ask this question before I even saw it, so I did not take inspiration from it.

So I was wondering, was Al asking if he should kill him?

Why should he kill him just because he didn't want the Rosato brothers to live?