On a night Chelsea fans walking down Fulham Road will have chatted with excitement about the rare chance to watch Lamine Yamal in the flesh, Chelsea’s own 18-year-old wonderkid stopped at the corner flag, pointed at himself, then pointed at the ground. Here I am, he was saying: the teenage star to really take note of.

Estevao Willian ’s sublime run and finish was a crucial goal for a Chelsea team deserving of a second against Barcelona but, up to that point, unable to score it by legal means. It was also a seismic moment on the Brazilian’s one-way route to stardom.

If the billing of Chelsea against Barcelona had centred around these two remarkable teenage wingers , born just three months apart, it had been appropriately caveated with the acknowledgement that Yamal has achieve

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