Paul Scholes says Ashley Young and Phil Jones have stepped up a level since joining Manchester United.
Scholes says the impact made by Young and Jones is easily explainable.
He told the Observer: "The biggest thing is that they're playing with better players - the best in England. We've won the leagues to prove that. I don't think there's any rocket science to the way we play, it's just good attacking football. It's not complicated or difficult to understand. When you get clever players like Ashley or Phil Jones it's no problem for them to slot into the team."