Former Manchester United skipper Lou Macari was happy to see Luke Shaw in action on Monday for the U21s.
Shaw featured in the victory over Sunderland after recovering from a preseason hamstring injury.
"He did okay in his 45 minutes against Sunderland but he can do better and I have seen him play better as well," Macari told the Manchester Evening News.
"I saw it for Southampton's first team but I saw even more of him when he was in the Saints reserves and youth side when they played United. There was no doubt he was going to be a top talent.
"But it has been a lot to take on board. Going from Southampton to playing for England at the World Cup in Brazil and then to Manchester United with a huge price tag.
"The jump in football doesn't get any bigger. In six months his whole world has changed around dramatically. Any lad making that journey will find it hard."
