But Redknapp - once a ball-playing midfielder - insists Pogba will not be missed for the derby, despite United looking weaker when the ace was injured earlier in the season.
Paul Pogba has harmed Manchester United's chances of winning the derby with Man City this weekend, says Fernandinho. And Champions League victor and pundit Steven Gerard has noticed how well the Frenchman has played. "I thought the same when he was a Juventus player".
Man City midfielder Fernandinho says it is a blow for Manchester United. "He's also a threat in the box off set-pieces and defending side of it as well, he's a big giant in the box and a big presence there".
Do you think United can beat City without Pogba? But while United do have the likes of Ander Herrera and Marouane Fellaini to replace Pogba, the stats prove that those shoes will certainly be very tough to fill.
The summer purchase of Nemanja Matic has helped give Pogba the platform he needs to damage opposing defences, and he already has three goals and six assists from 12 appearances this term.
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Pogba might be the powerhouse of United's midfield (especially going forward, linking the midfield with attack, and orchestrating most United's offensive moves), but his lack of the necessary defensive qualities as a central midfielder can be a problem to any side.
"We need to [attack]", he added.
"They are first for good reason because they have been doing great". However, the former Juventus star has been absolutely brilliant for the Red Devils and with Gerard comparing the Frenchman to himself things can only go upwards for him.
Pogba can definitely improve the tactical and positional areas of his game, as at times he does tend to become attracted to marauding forward when sometimes, like against Arsenal last weekend when his team is two nil up, the best option is sometimes to sit in, and pick your moments to burst forward a little more wisely.