Manchester United boss Erik ten Hag says Jurgen Klopp's resignation is a blow for the Premier League.
Klopp will leave Liverpool at the end of the season.
Ten Hag said: "It is not good for the Premier League.
"He has created an era at Liverpool. He has built the club up and raised them back to where they belong. So congratulations on that.
"He has done a fantastic job at Liverpool."