The Reds were 2-1 winners against Tottenham Hotspur at Wembley courtesy of goals from Georginio Wijnaldum and Roberto Firmino.
Liverpool FC were dominant against Spurs to lay down an early marker in the title race and keep pace with Chelsea FC at the top of the table.
The Merseyside outfit have won their opening five Premier League games of the season following wins over West Ham, Brighton, Crystal Palace and Leicester.
Milner has started all five of their Premier League fixtures to highlight the 32-year-old’s continued importance to the Liverpool FC team.
Former Republic of Ireland international Keane raved about Milner following his influential performances in the middle of the park.
“Milner was fantastic. That’s why he is playing. He works so hard. He has great delivery,” Keane told Sky Sports.
Liverpool FC signed Milner in a free transfer from their title rivals Manchester City in the 2015 summer transfer window.
The versatile midfielder has scored 16 times in 137 games in all competitions over the past three and a half seasons at the Anfield outfit.
Milner spent the 2016-17 being played out of position at left-back to highlight his versatility.
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