Jurgen Klopp has admitted that his centre-back partnership of Joe Gomez and Joel Matip will be "tested" - but the Liverpool supremo says that he knows they will be able co-exist successfully without "a shadow of a doubt".
The German has been left with selection headaches at the back following the news that Virgil van Dijk will be out for the majority of the season after suffering an ACL injury in a clash with Everton goalkeeper Jordan Pickford during last week's Merseyside derby.
Having dropped back Fabinho to partner England regular Gomez for their Champions League victory over Ajax in midweek, Klopp is mulling over just how to solve the long-term problem of replacing arguably the world's best defender for their first top-flight title defence in three decades.