If you want a measure of how private a place the dressing room was when I was growing up at Manchester United, consider this: even Sir Alex Ferguson would knock before coming into the dressing room at the Cliff, the old training ground. The dressing room is for the players - and the players only.

From United's point of view, it is always difficult to tell just when a young footballer is going to mature into a first-class professional ready to play at the highest level, but the story of how Pogba slipped away from United has more than one strand to it.

I first remember Wayne Rooney from a game at Old Trafford in 2002 when he came on as a late substitute for Everton and, in a brilliant 15-minute performance, skipped past me on a couple of occasions.

My view is that you show Messi one side or the other, and if he goes past you, he goes past you. But if he slips it through your legs, then you have to obstruct him and take the foul. Just don't ever let yourself be nutmegged.

Great performers - in sports, the arts, business, or whatever field - have undertaken massive amounts of training. And when that training is complete... they train some more, and harder than they expect to perform. Why? Training builds confidence and ensures peak performance.

Competition is the spice of sports; but if you make spice the whole meal you'll be sick.

Fans give me abuse all the time. Nearly every team does that. If I wasn't a good player, you wouldn't feel like you need to boo me the whole game. So do that if it makes you feel better, but it does spur me on. It's like, 'You expect something from me; that's why you're doing this,' so I don't mind it. They can boo me all day long, really.

The Women's Sports Foundation holds a unique position in developing opportunities for girls and women of all abilities to be active whether recreationally or competitively, and I'm excited to help lead the organization to impact even more lives. It is an honor to continue to build the legacy created by Billie Jean King and all of our leaders.