The Red Devils sacked Ole Gunnar Solskjaer earlier this week. The club are yet to name a permanent replacement for the 48-year-old.
As you can see/hear in the footage below, Klopp simply did not understand why a reporter would ask him a question in relation to Manchester United ahead of a European clash against Porto.
We can understand where the German is coming from. Liverpool don't play Manchester United this week, so they are obviously not a focus for Klopp right now.