Premier League leaders Liverpool host champions Manchester City on Sunday with both sides chasing history in a huge clash at the top of the table.
It could also be a final league meeting between Jurgen Klopp and Pep Guardiola.
"I do the job myself so I see excellence when I face it and Pep is definitely that," said Klopp.
Liverpool and City have won every Premier League title since 2018, with Klopp's side finishing top in 2020 and Guardiola a five-time winner.
"The way he has influenced football, winning the amount of trophies he was won in his career," added Klopp.