The Mirror says Sarri was convinced by his coaching staff that bringing on Willy Caballero was the best option because of his impressive record in saving penalties.
But the whole mix-up came because Kepa was completely in the dark about the plan and that is why he did not want to come off despite suffering cramp just before.
However, it is why Sarri described the whole mix-up as a “misunderstanding" after the game and has since sidestepped questions about whether he always planned to bring on Caballero.
But Sarri did later confirm that he knew Caballero - who was Manchester City 's penalty shoot-out hero in the 2016 League Cup final - knew “the players very well" from his time at the Etihad.
Sarri tried during the game to make the change towards the end of extra time but when Kepa refused to come off, the incensed Chelsea boss stormed off towards the dressing room admitting he went to cool off.
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