While keeping his cards close to his chest, Sir Alex outlined his thoughts in detail at a press conference in Boston.
"We try to look ahead, we try to make sure we have an influx of young players coming through to replace the older players," he explained. "It's obvious that for the last few years we've been well aware of the need to replace Ryan Giggs. We're fortunate he's managed to carry on and still perform the way he does. And with Gary Neville, Paul Scholes and Edwin van der Sar leaving, we were well aware that we were going to have to replace them at some point.
"So the work we've done in the last few years has been centred around that and trying to make sure we still have the quality in the squad to carry on the success. The big problem, of course, is how do you replace somebody like Paul Scholes? It's very, very difficult."