“I’m sure that’s been behind the decision to play this game there.

“We’ve had great games and great atmospheres at the Cardiff City Stadium in recent years, but we’re looking forward to playing there again.

“For this type of game I’m sure the atmosphere is going to be great.”

Allen has played at the Principality Stadium for Team GB during the 2012 Olympics.

But he was an unused substitute when Wales last played there, a 2-0 defeat to England in Euro 2012 qualifying.

“A lot has happened for Welsh football in that time but I will finally get the chance to play for Wales there,” Allen said.

“I used to go there when I was a kid as I was fortunate that my school went to all the games. There were some great ones and the Italy game (a 2-1 win for Wales in 2002) stands out.

“They were incredible occasions for a kid and inspired me to be one of the players out there in the future.”

Wales are continuing to monitor the fitness of Gareth Bale after the forward came off in the closing stages of Real Madrid’s LaLiga defeat at Alaves on Saturday.

Manager Ryan Giggs must also strike the right balance on selection with a Nations League trip to the Republic of Ireland five days later.

“As a player you always hope you to get the chance to test yourself against these teams,” said Stoke midfielder Allen, who could come up against the likes of Barcelona’s Sergio Busquets, Thiago Alcantara, of Bayern Munich, and Atletico Madrid pair Koke and Saul Niguez.

“It is going to be a great challenge and one which will test ourselves to the limits.

“The players are right at the top of world football and a lot of homework has gone into playing them.

“I think there’s a certain element of understanding that you will have long periods where they keep the ball.

“We need to be fully focused and right on top of our game because they are as good defensively as they are with the ball as well.”

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