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Frank Lampard has mounted a strong defence of Antonio Rudiger in the face of criticism from Jose Mourinho over Son Heung-min's red card in Chelsea's derby win at Tottenham .

Lampard plans talks with Rudiger on Christmas Eve to reassure the Germany star of his and Chelsea's solidarity over the defender's allegations he suffered racist abuse at Spurs.

Tottenham boss Mourinho told Rudiger to "stand up and play man" in questioning the Chelsea centre-back's reaction to being kicked by Son that brought the South Korea forward a red card on Sunday.

And now Lampard has hit back at Mourinho, insisting Rudiger should be under no kind of scrutiny over Son's dismissal during Chelsea's 2-0 win at Tottenham.

(Image: REUTERS)

Asked for a response to Mourinho's criticism of Rudiger, Lampard said: "With Toni, in this incident when he's having to post after the game about something we know is a huge deal (racism), I think to question his integrity in that time is disappointing for sure.

"Pretty universally, certainly what I heard in the commentary and the post-match reflection was that the Son incident was a red card.

"It wasn't brutal but it was instinctive that warrants a red card in the modern day. It was pretty clear that was the case. I wouldn't question Toni's integrity on that.

"So I do defend Toni firmly on it."

(Image: Colorsport/Ashley Western)

Lampard's response comes after Mourinho claimed Rudiger should be the one under scrutiny for his role in Son's red card, rather than the Tottenham player.

Spurs have appealed against the decision, which led to the alleged racist abuse of the Chelsea defender, and are waiting to hear from the Football Association whether their player must serve a three-match ban.

And Mourinho, who sarcastically wished Rudiger well in his recovery from "broken ribs" after the game, said the German's over-the-top reaction should be in focus.

(Image: REUTERS)

"I hope the Premier League is still the Premier League and will always be the Premier League and I think the focus should be on Antonio Rudiger and not on Son," Mourinho said, speaking in his press conference on Monday.

"I'm not speaking about the racism incident, this is another thing. I am speaking about that incident, the red card.

"In the Premier League I love there is no space also for what Rudiger did. Stand up and play man. This is the Premier League.

(Image: IKIMAGES/AFP via Getty Images)

"In some countries, especially now Latin cultures, you go to Latin America, Portugal, Spain, Italy and that happens, it is a cultural thing, but not in the Premier League, and the moment we try to punish the reaction of some player, insignificant reaction, but you try to punish and you let it go the other one, it is because then you become part of it (complicit).

"That's why I was trying to joke and making a bit of fun about it. Come on, do you think Rudiger plays the next game or do you think he's injured? I think he plays.

"And we speak about Son and don't speak about him."