The instruction has not been forgotten on the evidence of his team’s comfortable passage into round four at the expense of Derby County.
It was a night of firsts for Liverpool at the iPro Stadium where the Estonia international Ragnar Klavan scored his first goal for the club, Loris Karius made his competitive debut in goal and the promising academy prospect Ovie Ejaria joined the senior ranks as a late substitute.
It was also another demonstration of the class Liverpool possess in Philippe Coutinho and, increasingly, Roberto Firmino as the Brazilian duo dissected the Championship team in a commanding second-half performance.