The Portuguese is one of those managers who doesn't shy away from using the park-the-bus tactics against top oppositions, and while that was quite clear from the first whistle, Redknapp believes that Klopp still should have found a crack in the Red Devils' defensive wall.
"I need to think about this and not about giving anyone Champions League experience or whatever", Klopp said in response to a suggestion he might have included Ben Woodburn - again in Steven Gerrard's under-19s squad - in the senior squad for the first time.
This is Liverpool's 10th Champions League campaign, and only their second appearance in the group stages in the past eight seasons.
Maribor now sit at the bottom of Group E on just one point, while the Reds are second on two, but neither side have won a game yet.More news: Amid crises, tensions between Pres. Trump and Tillerson persist
Building on Carragher's comments, Redknapp further scrutinized Klopp for his tactics, and wrote that questions need to be asked from the German in regard to the disappointing performance.
Liverpool manager Jurgen Klopp has hit back at critics on the eve of his side's Champions League clash with Maribor. We know this is an important moment in the group for us. No chance. It is the last place I would do things like this. They are the only team yet to pick up a card in this season's Champions League.
Joe Gomez has been in favour at right-back in recent weeks but I think we'll see Trent Alexander-Arnold come in tomorrow night with Nathaniel Clyne still sidelined with a hamstring injury. "We need to be concentrated and courageous against a top team of a European league", he said.
Maribor - who have won the title in six of the last seven seasons - are 14 games unbeaten domestically and despite having yet to win in Europe this season, will be no pushovers.
Liverpool haven't been the most ruthless team in front of goal this term despite boasting of a star-studded attack.