Manchester United's clash with Chelsea ended with dramatic scenes as Jose Mourinho had to be pulled away from a member of Chelsea's staff.
Ianni forms part of Sarri's 10-man strong backroom staff, along with club legend Gianfranco Zola, one of two assistant first-team coaches.
With just seconds left on the clock, however, substitute Barkley popped up to deny the Red Devils two precious points, lifting Chelsea temporarily to the top of the Premier League table in the process.
"I was very happy with our performance for 60 minutes", Sarri said after the 2-2 draw. "We didn't sleep in the hotel, everyone stayed at his own house, and I think the players when they woke up - because they read on social media - the pre-match was not easy for them".
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Newcastle were, ultimately, unable to capitalise on an early two-goal lead before losing 3-2 but Brighton, Tottenham, Derby and West Ham have all exploited failings - United conceded 11 goals in those four games alone - and Hazard may have every confidence of doing the same. But I have that situation immediately [after the match].
And the good feeling from United's dramatic 3-2 win over Newcastle before the worldwide break has not yet dissipated, with his players "happy and focused".
The manager's temperature was rising even before then as United protected the lead that could have given them a crucial win, with the added delight for Mourinho of achieving it at Stamford Bridge, where he won those three titles.
"I don't want the long ball, and going for second balls, I want to play with short passes".
For Mourinho, the frustration has been building with the team's poor start to the season, and he also has to react better.
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I have a lot of respect for him as a player, but you can't respect someone who plays the game like that". "It's a dirty play". Machado would later reach base in the 13th inning. "What happens on the field stays on the field". "One time is an accident".
"Maurizio saw and told that he would take care of it internally and to accept his apologies, which I did", said Mourinho.
By contrast, United are seven points worse off than their next opponents and Mourinho has come under significant pressure following a hard start to the campaign, media reports prior to the worldwide break even suggesting the Portuguese was going to lose his job. We put lots of "feet" in the last third in the first half. But I also made mistakes in football matches and I will make more so when after the game he [Ianni] came to me to apologise, I accepted his apologies and nothing more to say. 'A physical match and United are better than us in a physical match.
"I want to play every game for three points", Sarri told a news conference.
Hazard and Mourinho didn't end on the best of terms when the Portuguese was sacked from his second spell at Stamford Bridge in December 2015 with Chelsea languishing in 16th and Hazard having failed to score a Premier League goal all season to that point.
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