Simon Johnson of the London Evening Standard reports that Ianni has been faced with a charge but Manchester United boss Jose Mourinho has escaped any form of punishment.
But the FA has chose to take action.
"It is alleged that his behavior in the 96th minute constituted improper conduct". I spoke with the member of staff and I have to be very hard.
"The way we want to play and the way we can play was shown in the past two matches".
"I don't like this press conference", he said, after rebuffing - or only giving short answers to - questions about Real Madrid's current crisis, Cristiano Ronaldo, Paul Pogba and Alexis Sanchez.
"And I'm not happy at all with more than that".
"But then the young fellow came, he also apologised and I told him "I accept your apology". I think he's developing.More news: Samsung Launches Galaxy Tab S4, Price & Specs
The 31-year-old told the club's official website: "Even though we were 2-1 down, we kept trying to score the equaliser and we did that in the end so I think the spirit was incredible".
"I hope everybody does the same as I did and do not disturb the career of a great guy".
The Portuguese spoke into a camera in his mother tongue after his side came from behind before the global break and has until Wednesday to respond, having been granted an extension.
A smiling Cristiano Ronaldo on Monday declared he is an "example" on and off the field, amid allegations of rape made against the five-time Ballon d'Or victor in the United States.
Blues supporters also directed chants towards Mourinho, who replied by gesturing three fingers, reminding them about the three Premier League titles he won as Chelsea manager.
Ronaldo strenuously denied the allegations in a statement two weeks ago and has been backed by his new club.