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Blues boss Maurizio Sarri wanted to send the Argentine on to replace Kepa Arrizabalaga as extra-time came to an end.

But Kepa refused to leave the field, despite pulling up injured after saving a fierce Sergio Aguero effort.

Sarri was left in furious disbelief on the touchline at the £71.6m signing's stunning insubordination.

The Italian stormed towards the Chelsea bench slammed an object to the turf in frustration.

As Caballero was left bemused by events, Sarri appeared to head for the stadium exit before having a change of heart and returning.

The emotion of the situation was too much for the former Manchester City keeper to bare and he appeared to break down in tears.

Kepa, meanwhile, recovered from what appeared to be a cramp issue to take his place in goal for the shoot-out.

Jorginho, a Sarri signing who has come in for recent criticism, proceeded to miss the first spot-kick.

(Image: GETTY)

(Image: GETTY) (Image: GETTY)

And his tame effort set the tone for Chelsea in the Wembley showpiece lottery.

Aguero's scuffed penalty should have been saved by Kepa but it squirmed under him and into the net.

The Spaniard then redeemed himself to an extent by saving Leroy Sane's effort to level proceedings.

(Image: GETTY)

Chelsea's David Luiz then saw his shot rebound off the post to give City back their advantage.

But Eden Hazard kept the Blues in the tie with a risky penalty that Ederson had no chance of saving.

And finally it was left to Raheem Sterling to win the first trophy of the season for Pep Guardiola's team.