Ragnar Klavan has settled into life at Liverpool relatively quickly following his summer switch from Augsburg.
The 30-year-old centre-back opened his account for the Reds during their comfortable 3-0 victory over Derby in the EFL Cup on Tuesday and his manager has been pleased with how his new signing has adjusted to English football.
However, Klavan was once the source of great frustration for Jurgen Klopp, stretching back to his time in charge of Borussia Dortmund.
Speaking to the press ahead of Liverpool's Premier League clash with Hull on Saturday, Klopp revealed he has been a fan of the Estonian for a long time.
Klavan joined his previous club Augsburg from AZ Alkmaar in 2012 and Klopp admitted his disappointment at missing out on the centre-back for Dortmund.
"With Ragnar it’s quite simple. I saw him playing for Augsburg. I was surprised they found a player like him and we didn’t before - I wasn’t happy with this!" Klopp said.
"We didn’t need a defender at Dortmund so I didn’t go for him.
"When I came here and came aware of our situation, he was very early in my idea. He is a wonderful football player - with a little issue he is not 21 anymore. It was a great opportunity. I did not have to convince him too much."
Klavan's arrival for less than £5 million may have raised a few eyebrows among those who hadn't heard of him before, however, Klopp believes he is already winning the doubters over.
He added: "I like to work together with players who really want to come. In the beginning, a few people were surprised, but not a lot of questions about his quality."
Of course, Klavan isn't the only new Liverpool centre-back to swap the Bundesliga for the Premier League, with Joel Matip also joining from Schalke in the summer.
It means there is some serious competition for places in Klopp's defence, although forgotten man Mamadou Sakho remains firmly out of favour after falling out with the manager during pre-season.
But Klavan has the manager in his corner at the moment and he will be hoping the performance against Derby was enough to keep his place in the starting XI for Hull's visit to Anfield on Saturday.
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