Ahead of Sunday's top-of-the-table clash, Manchester City manager Pep Guardiola feels Liverpool are strongest team in the world at the moment.
The Reds are yet to taste defeat in the Premier League this season and currently sit six points ahead of the defending champions.
The Citizens recorded a win and a draw against Jurgen Klopp's charges last season, but Guardiola insists the Reds are the best challengers he's come up against.
"As a manager, I said last season when we won the league, they're the best contender I ever faced in my career to win this league," he said.
"It was the biggest achievement, or one of the biggest achievements, as a club. It remains the same. Probably right now they're the strongest team in the world.
"They are an exceptional team. Of course, the history is there for itself. It's something special, I think more for the quality of the team of what they do, quality of players they have, quality of manager they have, I believe more in that, in the team, than the scenario [atmosphere at Liverpool].
"Right now it's [Anfield] one of the toughest ones, right now in Europe it’s the toughest stadiums to go there."