Alejandro Garnacho given harrowing Man Utd warning as his bad behaviour emerges

It is not the first time former United winger Garnacho has faced criticism for his attitude on and off the pitch, something supporters have frequently noticed.

Despite the game having evolved considerably since Butt's career, the former midfielder claimed that had Garnacho been at Old Trafford back when he was a player, he would have received a stern reminder to sort out his behaviour, knuckle down and stop fooling around.

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"Forget his ability, I don't think he is that great anyway, but his attitude was a disgrace at Man United," the former midfielder said on The Good, The Bad and The Football podcast. "He would have got treated really badly, he would've got taken out in training, if he was brought up with us."

Cristiano Ronaldo, Garnacho's idol, endured precisely this kind of treatment at Old Trafford, which reportedly reduced him to tears as a teenager. Rio Ferdinand previously revealed he helped forge Ronaldo's mental toughness by "borderline bullying" him.

Ferdinand told the Kyle and Jackie O radio show: "Me and a guy called Quinton Fortune - another team-mate - we used to take the mick out of him a lot. He was a lot younger than us at the time - borderline bullying, maybe, but it was just trying to, like, build him, build that resilience.

"We used to play every other day before training, as part of the warm-up. I used to smash him all over the place. He did beat me, it was me and him, [ranked] one and two, like [Roger] Federer and [Rafael] Nadal. If it was televised, it would have broken records. He used to, like, almost cry and that, he was so competitive."

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Butt, who spent a period working alongside Garnacho during his time at the club, went on to say: "When he signed at 16, I was academy manager. Garnacho was always a bit stand-offish, always thought he should be playing.

"He had a high opinion of himself; I just thought he had an edge about him. When he got into Man United's first team, and I will say what I think.

"He got above his station way too quickly. Now, I hope young players get paid millions. I'm not one that says they get too much money. He scored the bicycle kick, which was phenomenal, and went like that [points up]. Somebody at that club should have swatted him down; maybe he ignored them. The best thing Man United did was sell him."

Chelsea snapped up the Argentine for £40million last summer, though he has struggled to make an impact during a frustrating debut campaign.