Former Liverpool defender Jamie Carragher will run out at the iconic Santiago Bernabeu this weekend alongside a host of former players.
The 37-year-old believes those involved will feel tense before kick-off, just as they did in their playing days.
It's a bizarre thought that former footballers can get nerves prior to featuring in a charity match, but it takes all sorts. The result in games like this is always secondary to raising money, but neither of them will want to make any mistakes in front of their old faithful fans.
"It's something that you miss when you finish, getting ready before a game and pulling that shirt on ready to go out," Carragher told Liverpoolfc.com.
"I'm sure there'll be a lot of joking around before, but I think that hour or two before the game you're putting your kit on and getting ready, I think there'll be a few nerves and butterflies.
"You don't play too often and you don't want to embarrass yourself, and it's also taking you back to your playing days.
"For all of us, unfortunately, once those days are gone, they never come back. It's nice on days like this that hopefully a few of the memories come back and we can still produce near enough what we could do in the past."
The Bootle-born centre-half came up against some of the world's best strikers throughout his Liverpool career but is now eagerly anticipating facing one of the greatest Real Madrid players of all time.
"Nobody will want to go out there and embarrass themselves, of course, and touch wood it doesn't happen," he added.
"You're playing against some world-class former players and I played alongside Zidane in a charity game 12 months ago and he was the best player on the pitch, even then.
"I'm sure Zidane is looking after himself, he trains the [Real] B team so he's training every day. Fingers crossed the lads have been looking after themselves the last couple of weeks!"
Carragher, who now works as a pundit on Sky Sports alongside Gary Neville, had a successful career at Anfield but was unable to deliver a Premier League title, much like former team-mate Steven Gerrard.
The Premier League aside, Carragher won a Champions League, two FA Cups and three League Cups.