Maurizio Sarri revealed he had "dealt with" Marco Ianni after his second assistant coach incited a touchline bust-up during a dramatic finish to Chelsea's 2-2 draw with Manchester United.
Ianni celebrated Ross Barkley's stoppage-time equaliser for the Blues in front of the visiting bench at Stamford Bridge, much to the annoyance of Jose Mourinho.
The United manager had to be restrained by stewards as tempers flared in the aftermath to the late goal, though Sarri insisted he did not witness the incident.
The Chelsea boss has, however, spoken to the member of his staff who was involved, while Mourinho insisted there was no bad feeling after receiving an apology from both Sarri and Ianni.
"Sincerely I have not seen what happened, but then I spoke to Jose, of course, then I spoke to the member of the staff because I think that we were on the wrong side, so I have dealt with this immediately," Sarri told Sky Sports.
"I think it's private. I spoke with the member of staff and I have to be very hard. I cannot come here and tell everything, otherwise with my staff I am not credible.
"I am not really happy, as I said before, after I have spoken with Jose I understood that we were on the wrong side of the situation."
The Blues fought back to preserve Sarri's unbeaten Premier League record, substitute Barkley securing a point when he fired home in the sixth and final minute of additional time.
Antonio Rudiger had headed the hosts in front, but United turned the game around, Anthony Martial grabbing a brace in an absorbing contest between Mourinho's current club and one of his former employers.
Sarri was disappointed with how his team struggled to cope with the visitors' more direct approach in the second half, though he will watch the game back before making a more detailed assessment of Chelsea's performance.
"I want to play for three points. For 60 minutes we played our football," the former Napoli coach said in his post-match press conference.
"Then after 1-1, we didn't play our football, only the long ball, we are not organised for the second ball. In this type of football, United are better than us. I am really disappointed in this type of performance.
"The 2-2 in the last minute is okay, okay for the confidence of my players, but I have to look [at] something.
"I have seen the match on the bench, and now want to study the second half of the match."
|Tuchel confirms Rabiot out of PSG contention|
|Madrid derby kick-off confirmed for February 9|
|Benzema fit to face Sevilla despite broken finger, Solari confirms|
|Bournemouth boss Howe says no offers received for Wilson|
|Kerber cruises after Wozniacki, Sabalenka upsets|
|Mbappe a great player and great person, says beaming Beckham|
|Gracia confident someone will step up if Doucoure leaves for PSG|
|Albrighton signs new Leicester deal|
|Niasse joins Cardiff on loan from Everton|
|Hendrick credited with Fulham strike|
|Western Sydney Wanderers 1 Adelaide United 2: Goodwin compounds Wanderers woes|
|Chahal and Dhoni carry India to ODI triumph|
|Levante report Barcelona for alleged use of ineligible player in Copa del Rey|
|Solskjaer regrets Sanchez´s Reading setback|
|Tomic brands Hewitt a ´liar´ as feud continues|
|Ruthless Nadal thrashes teenager De Minaur|
|Wozniacki enjoyed status as defending champion in Melbourne|
|Solskjaer backs Mourinho to return to football´s big time|
|Murray to miss Open 13 Marseille|
|Solskjaer´s United turnaround no easy task, says Hughton|
|The big Friday Premier League quiz|
|How James Harden´s 2018-19 numbers compare to his MVP campaign|
|It´s insane! - Tsitsipas excited to face ´legend´ Federer|
|Sharapova ends Wozniacki title defence|
|American teen Anisimova sends records tumbling at Aus Open|
|Lakers survive Ball´s gaffe to beat Thunder in OT|
|Federer expects ´athletic´ and ´attacking´ Tsitsipas clash|
|Alcacer is fit and available – Favre|
|Fantastic Federer breezes past Fritz|
|Pogba happy with Man United approach under Solskjaer|
|Mickelson leads Desert Classic, ties career-low with 12-under 60|
|Warriors´ Durant on Curry: He´s a once-in-a-generation, once-in-a-lifetime talent|
|Patriots owner says Brady is greatest player, not just quarterback, of all time|
|Inglis to retire from representative duty this year, NRL in 2020|
|Is Beal better without Wall? Wizards star says it´s ´absolutely nonsense´|
|Rockets C Capela undergoes thumb surgery, expected back after All-Star break|
|This Week in U.S. Sports: Irving apologises, Machado´s agent isn´t happy|
|Knicks in woeful shape, but 2019 could still be bright in New York|
|Valverde not worried about Levante´s Copa appeal|
|Nowell an option for England at flanker, reveals Jones|
|Pellegrini: Arnautovic available for the right price|
|Knicks throw away 19-point lead and lose on last-second goaltending call|
|Tebow invited back to Mets´ major league spring training|
|Canelo and Jacobs agree unification fight|
|Barcelona 3 Levante 0 (4-2 agg): Dembele at the double as Barca advance|
|Levante to lodge complaint over Barcelona Copa selection|
|Kanter´s London absence ´very unfortunate´, says NBA commissioner|
|NBA could swap London for Paris in 2020|
|Spurs coach Popovich uncertain if he will return next season|
|Pistons´ Griffin fined for verbal abuse of official|
|Everton do not have financial conditions to enter transfer market - Silva|
|Andy Cole joins Sol Campbell´s coaching staff at Macclesfield|
|Atletico confirm Saul has thigh injury|
|Wood replaces injured Stone in England squad|
|Lebanon 4 North Korea 1: Disciplinary record cruelly denies Radulovic´s men|
|Saudi Arabia 0 Qatar 2: In-form Ali bags brace as Qatar top group|
|Robertson signs new Liverpool deal|
|Vunipola backs Farrell to thrive in solo leadership role|
|People don´t know what´s going on behind the scenes - Mourinho defends United stint|
|Indefatigable Muguruza knocks out Konta at 3:12am|
|Serena coasts, difficulties for Halep and Muguruza´s marathon|
|Lowry retains Abu Dhabi lead|
|Djokovic battles past Tsonga, young guns flourish|
|Louisville airport to be renamed in Muhammad Ali´s honour|
|Emery not thinking about Ozil speculation|
|Sri Lanka hopeful over Kusal Mendis finger injury|
|Oman 3 Turkmenistan 1: Last-gasp Al-Musallami guarantees progression|
|Emery wants Cech to end career ´in a good moment´|
|Japan 2 Uzbekistan 1: Shiotani stunner seals comeback and top spot|
|Calhanoglu deal ´financially impossible´ for Leipzig|