Jurgen Klopp plays a key role in ensuring Liverpool only sign players in his mould. The German has proven over the years that he doesn't like signing 'alternatives'.
Simply, when he identifies a target he does his utmost to land that individual. Virgil van Dijk and Alisson are two examples of players thoroughly scouted by Klopp and his team of advisors, and two players who turned the Reds from a great side into the best side on the planet.
Klopp recently spoke out about the part he plays in bringing new players to Liverpool, and how he personally speaks to each individual once the transfer has been announced, the photographers leave and the fanfare dies down.