Manchester United U18s boss Paul McGuinness has revealed how they're changing systems to improve the players' education.
"We tried something a bit different," he told manutd.com. "It takes some getting used to, but it is all part of the learning process. The manager, Sir Alex, certainly wants us to do it as part of the boys' education.
"We had some really good passages of play," he added. "There are aspects we will work on so the players know exactly how to play that system.
"There will be more occasions this season where we will try and play using different formations because, ultimately, we have to prepare players for the first-team, where sometimes alternative systems and formations are required to deal with different opponents."