Liverpool fans were delighted when the club announced Jurgen Klopp as their new manager last season.
The former Borussia Dortmund boss managed to take the Reds to two finals - the Capital One Cup and the Europa League - but despite failing to win either of them, fans on Merseyside have high expectation for this coming season and beyond.
The German came to Anfield with a glowing reputation, having guided Dortmund to two Bundesliga titles and a Champions League final appearance.
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But before managing the Yellow Submarine, he made his name at fellow German side Mainz.
And the president of Klopp's first club has declared that his move to Liverpool was "the best he ever made."
Liverpool take on the German side in their final pre-season friendly before the start of the Premier League season and Klopp will be returning to his old club where he spent 18 years as a player and a manager.
Club president Harald Strutz remains in contact with Klopp and still regards him as a friend, so it will be a special moment when they are reunited this afternoon.
It's testament to Klopp's love for the club he made his name that he takes his Liverpool squad to Germany, less than 24 hours after they defeated Barcelona 4-0 at Wembley.
But prior to the reunion, Strutz told the Liverpool ECHO: “For me it was beautiful that he decided to go to Liverpool. I'm of the opinion that it's the best club for him, for his mentality, for the kind of human being that he is and the way he likes to play football.
“He will be supported by all the people of Liverpool and I saw a lot of good impressions from their time in the Europa League last season.
“It's the best decision he ever made. I'm very happy that we have the opportunity to meet him again in Mainz against his Liverpool team. The Mainz people will be really delighted to see him.”
It's likely that Klopp will take a youthful squad to German, having used many of his seniors in the win yesterday.
However, it will be a chance for the manager to have one final look at his players before the season opener against Arsenal.
Liverpool have several injury concerns going into the new season, with James Milner the latest to pick up a knock in pre-season.
However, the Reds aren't too short of numbers having made five signings this summer.
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