Leicester midfielder Danny Drinkwater will not face any further action following his sending off against Manchester United.
The 26-year-old will therefore serve a one-match suspension after being booked twice at Old Trafford, meaning he will miss Saturday's home game against Everton.
Drinkwater reacted angrily and appeared to swear at referee Michael Oliver after picking up the second yellow card for a foul on Memphis Depay in the 1-1 draw.
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The incident was not mentioned in Oliver's match report and so the FA will not follow it up any further.
Ranieri said: "I am very sad because he will miss the next game at home."
It was also revealed that there will be no updates from the Football Association on Monday regarding the incident involving Robert Huth and Marouane Fellaini.
The pair will face a nervous wait to see if they face any further action after their run-in during the contest on Sunday.
In the first half Oliver appeared not to spot an incident inside the area where Huth tugged at Fellaini's hair, before the Belgium international midfielder reacted with an elbow and then a hand.
Leicester can secure the Premier League title on Monday night if Tottenham fail to beat Chelsea in a match live on Sky Sports 1.