Watch: Sarri goes ballistic as Kepa refuses to be substituted

Kepa Arrizabalaga and Maurizio Sarri probably aren't on great terms at the moment.

A tedious League Cup final gave way to pandemonium in the final minutes of extra time on Sunday, as the embattled Chelsea boss attempted to substitute the ailing goalkeeper with the contest against Manchester City destined for penalties.

Incredibly, the Spanish shot-stopper - who was writhing in pain just minutes earlier - refused to come off the pitch, leaving penalty specialist Willy Caballero glued on the sidelines, and the Italian bench boss fuming.

Sarri gesticulated wildly in an effort to call the 24-year-old to the bench, but Kepa was equally animated in his refusal. The two didn't speak during the interval between the end of extra time and the shootout, and Sarri had to be restrained by Antonio Rudiger.

Kepa, with a chance to be the hero in the shootout, could muster just one save, as City emerged with a 4-3 victory from the penalty spot.

Sarri said after the match that the heated episode was just a "big misunderstanding," a sentiment that was shared by his £71.6-million netminder.

"I have to say it was misunderstood," the Spaniard offered, as quoted by ESPN FC. "In no moment was it my intention to disobey, or anything like that with the boss. Just that it was misunderstood, because I had been attended to by the medics twice, and he thought that I wasn't in condition to continue."

He continued: "I know if you see it from outside, I don't know how it went out, it is not the best image. I have spoken with the boss. I think it was misunderstood. I understand that on television, on social media, they're talking about this but I am here to explain it, to say that it wasn't my intention to go against the manager."