Jurgen Klopp says he is wary of facing a man he dubbed "King of Cups" when his Liverpool face Unai Emery's Villarreal in the semi-finals of the Champions League.
Liverpool drew 3-3 with Benfica in their quarter-final second leg on Wednesday to go through to the last four with a 6-4 aggregate scoreline.
The win sets up a meeting with Villarreal, who pulled off a shock victory over Bayern Munich in the last eight.
"I saw the results, the game was very impressive. I only picked up pieces but to beat Juventus and Bayern Munich they deserve to be in the Champions League semi-finals," said Klopp.
"Unai Emery is the king of the cups, it is unbelievable what he is doing. But give me a bit of time to prepare it properly," he added with a grin.
Emery's sobriquet is well earned. The Spaniard is a three-time Europa League winner with Sevilla and triumphed in the same competition with Villarreal last season - the club's first major trophy - having also guided Arsenal to the 2019 final. He also collected four domestic cups during a two-year stint at Paris Saint-Germain.
Klopp was happy to overlook Liverpool's shortcomings against Benfica where as well as conceding three goals they also saw two efforts from the visitors ruled out for offside.