Redknapp heaped praise on Aaron Lennon and Niko Kranjcar, who both tormented City's rearguard.
"Aaron Lennon was fantastic - when he is on form he is hard to handle," said Redknapp. "He didn't get a look-in on Saturday but, today, he was great. We have to just keep giving him the ball.
"Left-backs hate it when he has the ball. He's a nightmare.
"And Niko Kranjcar was fantastic. He's been in great form since he's been here."