But the mood lightened up when Sarri was lost in a funny translation while explaining the incident to the reporters.
During the post-match press conference, he said, "Of course, as I said before, he [referring to Kepa Arrizabalaga] was right for the motivation but not for the conduct... not condom."
Sarri ended the press conference by clarifying that he had said 'conduct' in relation to the Kepa incident and not 'condom'.
In the match, watching Arrizabalaga appearing to struggle with cramp, and with a penalty shootout looming to settle the important clash, Sarri summoned Willy Caballero from the bench.
But controversially, Arrizabalaga refused to leave the field.
The goalkeeper said that he is "upset and sad" for not being able to take the title and did not stage a mutiny against the coach.
Chelsea went on to lose the shootout with Arrizabalaga beaten by four of Manchester City's spot kicks, including Raheem Sterling's winning shot - but he did pull of an impressive save to deny Leroy Sane.
The game had ended in a goalless draw after 90 minutes and half an hour of extra time.
Sarri ended the press conference by clarifying he had said 'conduct' in relation to the Kepa incident and not 'condom'.