Keita became the club's record buy when the Reds agreed to a €60 million transfer a year ago, but to the deal's unique structrue, the Guinean only arrived in the summer of 2018 to bolster their midfield.
"With the players they've bought in, I don't know what else they could have done", Redknapp told Sky Sports.
Along with the aforementioned signings, Liverpool have Henderson, James Milner, Adam Lallana and Georginio Wijnaldum competing for the three midfield spots in Klopp's favoured 4-3-3 system. It helps not only Loris, it helps Alisson as well, that you can see this is a very special place.More news: Chinese state media labels Trump's trade policies 'extortion'
After such an early flurry of action, the goals dried up temporarily.
Following the horror showing, the club had hoped Karius would return to the pre-season full of confidence, but after two errors during the Reds' pre-season tour, the Reds opted to smash the club transfer record for Brazillian shot-stopper Alisson Becker.
"He had to learn kind of a new position for him. I didn't need the final proof in and around the World Cup or in last season".
'I am not sure but it is Hendo.More news: Tesla buyout would need to go short on leverage
Asked if he is keen to play in the game, Henderson replied: "Yes, but at the same time I understand the lads have been back a lot longer than me and they have had minutes on the pitch". And I feel as though we have got a fantastic squad. "Maybe we will do some magic things with the formation on Tuesday".
Midfielders Fabinho and Marko Grujic both filled in after Van Dijk was replaced at the break, but Klopp insists that he is not anxious about that before Liverpool welcome West Ham United to Anfield on Sunday.More news: Chelsea's Willian: Barcelona made bid but future is with Maurizio Sarri