The Croatian defender was a key cog in a Liverpool side that managed to defy the odds and reach the Champions League final last season.
"I said: 'Yes, he can and he will.' He had to learn and he had to improve and that's exactly what he did".
"I can not kill your D-day (Sky Sports Deadline Day) show, people sit there in front of the television all day waiting", he added.
"From day one he settled in quite quickly".
Croatia worldwide Dejan Lovren will rejoin the squad on Monday after an extended break following the World Cup but is a doubt for the next two games.
And, of course, his comments in the World Cup were always going to be brought up.
Nevada County Strike Team on the Mendocino Complex
The wildfires have burned through 283,800 acres (114,850 hectares) - an area almost the size of the sprawling city of Los Angeles. While containment grew to 47 percent, burned acreage grew over the weekend, as well, now sitting at 164,413 acres burned.
As for lineups go this is my predicted Liverpool starting XI: Alisson Becker, Trent Alexander-Arnold, Joe Gomez, Virgil van Dijk, Andy Robertson, James Milner, Naby Keita, Fabinho, Sadio Mane, Roberto Firmino, Mohamed Salah.
"The league will be hard", Klopp said.
Jurgen Klopp's side were too clever, quick and powerful for their opponents throughout the game, despite making numerous changes at the break and further substitutions throughout the second half. Croatia do not have world class right-back and left-back, but they do not concede.
"He was with us in the Champions League final, and two years ago in the Europa League final".
With Liverpool widely believed to be unlikely to make a fresh approach for Fekir, especially when you consider that Lyon want £60million after his involvement at the World Cup, it could be that Chelsea and Manchester United look to turn his head. "He probably won't play Tuesday and Sunday will be very hard as well", continued the German, who is known to stick to a very rigorous training strategy. One of the main things I was asked about after the game was: 'Can he really play as the No. 6?'