Liverpool boss Jurgen Klopp dispatched two club scouts to watch Jonas Hector start for Germany against England at the weekend, The Mirror report.
Hector played all 90 minutes in the surprise 3-2 defeat for the hosts, and the Reds are expected to make an attempt to sign the Cologne defender this summer.
He is pictured below holding off potential Liverpool teammate Jordan Henderson.
Hector is expected to be Germany's starter at left-back at Euro 2016, and The Mirror report that Liverpool are considering making their move before the tournament to avoid his price sky rocketing.
His signing would spell bad news for Spanish defender Alberto Moreno, and add fresh competition for Joe Gomez when he returns from injury.
Klopp is well aware of Hector personally having managed against him with Dortmund. Hector is a former teammate of Kevin Wimmer, who has adjusted well to the Premier League this season since leaving Cologne last summer.
The 25-year-old has made 26 Bundesliga appearances for Cologne this season, with three assists to his name. He is currently under contract until 2018.