Manchester City have won five of the past six Premier League titles but Liverpool have been their main rivals, snatching the crown in 2020. The two teams are once again locked in a tussle at the top of the table, with leaders Liverpool ahead of the champions by a single point before today's clash at Anfield.
The Liverpool boss said Guardiola, whose team are chasing a second successive treble of Champions League, Premier League and FA Cup was "outstanding in many aspects".
"I know that, I do the job myself so I see excellence when I face it and Pep is definitely that so it's just so many different things over the years he did with his teams," Klopp told reporters on Friday. "How can I judge managers from the past? But in my lifetime he's the outstanding manager, definitely."