Ahead of today's clash at Chelsea, Souness claimed he hasn't been particularly impressed with Pogba since he joined the Old Trafford club back in 2016, suggesting he hasn't been great value for money.
Redknapp argued that the rest of the Manchester United team must also be blamed for the club's poor form, and insisted Pogba showed his class at the World Cup.
Graeme Souness: "You don't pay that kind of money for someone who can only play against the lesser teams. He has to turn up and show he is a proper player.
"For me he has the potential, but I think in the two years he's been at United I have not seen any improvement. Is that because United are disjointed or because they can't find a system that totally suits him?
"I think the manager has bent over backwards to try and play him in what he feels is his best position but I still see a young man who at time looks lost to me."
Jamie Redknapp: "I think we talk about him too much at times. I think it's not just about him today it's about Juan Mata, Matic in midfield, how do they stop Jorginho?
"Responsibility, obviously, and all the talk will always be about Paul Pogba but for some reason I would rather talk about the other players because they have got to stand up as well."
GS: "We were looking at a film about him so we have to talk about him."
JR: "That's not the point. All I'm saying is everyone always talks about him but he's not the only one who has been performing poorly all season."
GS: "But they paid all this money for him. I think there is a player inside there but I don't see it in these games. There is still plenty of time for him at 25."
JR: "He's a World Cup winner! And it's not all about him, do you not think the other players have got to do more?"
GS: "We are talking bout him. We could spend the whole show talking about Man United and who's not doing well. But for me, I expected so much more. He's got everything he needs to be a top player but I've not seen it yet.
"I have not seen it consistently and I have not seen it in games like this, hopefully today he proves me wrong."
JR: "I think that's unfair. I think at the World Cup he showed that. I just don't think he's doing it at United. I don't think the manager is helping him. I think it's unfair to say you're not seeing it, because you saw it at the World Cup."
GS: "I didn't see it at the World Cup either!"
JR: "Didn't you?! I did. He won the World Cup!"
GS: "So did Giroud, he's not had a shot in seven games."