"I want to make it absolutely clear that the Man City manager, Pep Guardiola, did not say what The Sun is falsely claiming in this story", he wrote.
That has been backed up by Redmond, who said in a statement on Twitter: "Yes, he was very passionate, intense and aggressive but he was only very complimentary and positive to me".
He added: "I told him I was doing what my manager had asked me to do in the game".
Despite later insisting he was telling the forward how good a player he was, a report claimed the Spaniard was offensive towards Redmond - but the 23-year-old insists that was not the case.
"If you ask me what happened and I explain what happened and the people don't believe me it is better we cancel our press conferences and just play games. But when one of the world's best managers compliments you or gives advice in any way, you listen". "But they didn't want to play, they were time-wasting from the ninth minute". "I did the same after a game in Dortmund and I had regrets then after the game and the same now", he explained. The can do that with me, with Nathan and with The Sun.
Guardiola has until December 4 to respond to the English FA's request.More news: Dan Mullen named new Florida Gators head coach
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Premier League leaders City beat the Saints 2-1 at the Etihad Stadium thanks to Raheem Sterling's superb stoppage-time victor.
Guardiola said he would "never judge the way opponents play against one of my teams". Everyone wants to win the game, definitely. Never, never in my career and in press conference, on the pitch and off the pitch was I disrespectful about what they do to beat me.
"I played against millions of managers in my career and the different ways they play".
"It's so complicated when teams defend with ten players. It's the same as I do to beat them". "But I think I was clear, we were clear, when Arsenal wanted him we said no, that's not going to happen, he's still young, we hope to make him happy and he can stay for longer. but it depends on the club and him".
At this stage, there is no misconduct charge levelled against Guardiola, whose side host West Ham in the Premier League on Sunday. They are the team who have created one of the most chances until now.