Joao Cancelo was congratulating Marc Guiu for his winner against Athletic Bilbao when the former Manchester City star was overheard making an unusual request of the youngster Video Loading Video UnavailableClick to playTap to playThe video will auto-play soon8Cancel Play nowLouie Barry discusses his time at Barcelona Joao Cancelo jokingly demanded Marc Guiu buy the whole Barcelona team dinner in McDonald's after the 17-year-old scored with just his second touch for the club.

Guiu was called into the squad for Sunday's clash with Athletic Bilbao after an injury crisis hit Xavi's senior group.

With the score goalless, Xavi opted to send the attacker on in place of fellow youngster Fermin Lopez, a decision he was repaid for just seconds later.

The young striker was played in by Joao Felix, who stayed calm to slot the ball past Unai Simon and steal a win for the hosts.

After the game, the Barca players rushed to congratulate Guiu for his stunning debut, with the cameras picking out a hilarious demand from Cancelo.

Cancelo played all 90 minutes against Bilbao at right-back, as Barca kept pace with La Liga leaders Real Madrid.

Guiu broke the record for the quickest league goal in Barca's history with his strike and was over the moon with his dream debut.

"I can't breathe.

I'm just enjoying the moment, I'm still flying.

I have been working hard all season to take any chances should they come," the Barca starlet said after the game.

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Joao Cancelo demanded a McDonald's from Marc Guiu as he congratulated the youngster for his winner against Athletic Bilbao "When I saw the goalkeeper coming off his line, I decided to shoot.

Before going on, Xavi told me to just do the same as I do in the youth team.

And to take any chances that came my way-" And that's exactly what he did!""Thanking the master for the confidence placed in me on such a special day, also thanking all the coaches I've had, colleagues, friends and especially all my family, who have helped me reach here.

"Now it's time to keep working and improving day by day to help the club achieve its objectives.

Many thanks to all the cules for your support on this special day for me.

Visca el Barca.

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Learn more The Spanish champions have stuck to their traditional style with this one but the club say there's a simple detail that echoes the club's 'pioneering spirit' and that makes it stand out from all other Barca shirts - a diamond that frames the club badge.

Barca says the diamond represents the first women's team to ever play a game of football at the Camp Nou.

Nike Cancelo replied to that post with two love heart emojis as he showed his support for the youngster.

Guiu could feature on Wednesday when Barcelona host Shakhtar Donetsk in the Champions League.

Xavi has included his star of the moment in the squad to face the Ukrainian side, with the injury crisis showing no signs of abating.

Guiu will also hope to be included when Barca face Real Madrid in the first El Clasico of the season this weekend.

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