The Reds beat Manchester United to his signature because they were aware of a clause in his contract - allowing him to leave for such a paltry figure - which their bitter Old Trafford rivals were oblivious to.
His club Salzburg extended the player's deal to 2021 last February, but crucially conceded a get-out option which allows him to leave for a big European club at a price well below his market value of £25-30m.
Liverpool in fact, have been in friendly talks with Minamino's Austrian club for the past six weeks, after trailing the versatile player for the past two years. The Reds had thrashed out the deal after amiable talks with the Red Bull sponsored club, with whom they have built a close relationship.
That stole a march on United, who saw him as an alternative to James Maddison, and have been scouting the Japanese international for several months.
But it was the information on the contract release clause which gave Liverpool the edge.