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La Liga does not allow shirt numbers above the number 25 as this relates to the maximum squad size registered for the Spanish league.

The only players who are allowed to wear shirt numbers above 25 are youth players because they are not registered in the same way.

This means that Alexander-Arnold will not be able to take his iconic shirt number 66 with him if he makes a move to Madrid.

There is bound to be a sense of sadness from the 26-year-old as it was a number he had received in the academy which he joined at six-years-old.

It was Lee Radcliffe, the Liverpool's kit operations manager, who had given the England international his celebrated number.

Trent would lose his iconic shirt number if he moves to Real Madrid(Image: MI News/NurPhoto)

"When we get any young lads that come down from the Academy, we always deliberately try to give them a high-ish number," Radcliffe told Liverpoolfc.com in 2020.

"We don't like to give them a low number in case they sort of think they've made it straight away, if you know what I mean.

You pick it out because it's a free number and it's around that sort of number you think, 'We'll give that out because he's only just come down'.

"When you see him now lifting trophies and celebrating with No.66 on the back, it's a weird feeling and I can't really describe it.

It's weird to see such a high number and for someone to be happy with it!

"Someone like Trent has just been happy to be around the first team and obviously doesn't realise how good he is.

He doesn't really ask for anything, to be honest.

"I think he's that laidback that he's obviously been given the number and thought, 'Yeah, that'll do me.