Manchester United manager Ole Gunnar Solskjaer has plenty of concerns about AZ Alkmaar's pitch ahead of their Europa League group stage clash on Thursday night.

United will face the Dutch side at Cars Jeans Stadion in The Hague, a temporary ground after a section of AZ's stadium roof collapsed.

The new stadium has an artificial pitch, and Solskjaer says it's one of the worst he has ever seen.

"I'm surprised they've chosen to play on this pitch when I've looked at it," Solskjaer said. "I'm used to it from Norway. It's not the best I've seen.

"It's one of the worst ones I've seen for a long while. We've al got standards back home in Norway anyway. It's safe, I'm not saying it's not. It's not the newest.

"It's just on the floor so on the carpet more or less, so when you pull the grass up you do that loads, there's more bounce.

"It seems like it's been used a lot but with my knees I've not enjoyed astro turf anyway.

"I'm surprised that in this climate you have to use astro turf. It's OK when you live in the North Pole like we more or less do in Norway and can't play in March, November or December. But here, I'm surprised."