Kostas Tsimikas brought title-winning and Champions League experience to Liverpool when he joined on a long-term contract in August 2020.
The Greece international left-back made the move to Merseyside after 86 appearances in all competitions for Olympiacos, with whom he won the domestic title in 2019-20.
It was a breakthrough year for the defender, including 46 games – 12 in the Champions League – as his side reclaimed the Greek Super League.
Such form caught the attention of the newly-crowned Premier League champions and the Reds sealed a deal to bring Tsimikas in ahead of the 2020-21 campaign.
“We have watched Kostas for a long time and are really happy that he has joined us,” said Jürgen Klopp when the transfer was announced.
“He is a very good footballer with an attitude to win and to compete, and I really like his mentality. It fits perfectly with the mood and the desire we have in our dressing room already.
“He has showed already at a young age he can experience football in a different country and do well – and he has been a big part of the success Olympiacos has had to win their title this season and in their European campaigns.”
Tsimikas, who took the No.21 shirt for Liverpool, had made his debut for Olympiacos in December 2015 and later enjoyed productive loan spells with Esbjerg in Denmark and Willem II in the Netherlands before establishing himself in their first team.
After representing his country at U19 and U21 level, he earned a first senior cap for Greece in October 2018.
Tsimikas made his LFC debut in a 7-2 Carabao Cup win away to Lincoln City on September 24, while a first Champions League appearance came as a substitute in a 5-0 win over Atalanta in Italy on November 3.