I worked with many great assistants to Sir Alex Ferguson over the years. Yet sometimes a manager's second-in-command is more suited to that role than any other. You confide in them - you tell them things that you would not tell the manager - and they are that bridge between the boss and the players.
It's the thing I miss about football, I suppose: being with the team day-in day-out, getting a team ready for a Saturday afternoon, or getting yourself ready for a Saturday afternoon - it's the most difficult part.
There is no doubt that my former manager Sir Alex exerted an influence over some referees. He was the master of dropping a comment into his Friday press conference - for instance, how long it had been since we had been given a penalty, or the treatment meted out to a player like Cristiano Ronaldo.
I am always loath to assign goalkeepers too much importance, but you have to make an exception for the greats.
For any footballer who plays for Real Madrid in the modern era, the prospect of leaving the club must feel like a step down no matter where they go - but it does not have to be like that.
St James' Park was always, in the course of my career, a great place to play football, for the wildness of the crowd and the no-holds-barred football that both my team, Manchester United, and Newcastle would play.
At United, my United, we had been honed into a ruthless team who played great football but, ultimately, were there to win football matches and league titles. At Newcastle, they could certainly play on their day, and the crowd was formidable, but there was a weakness - a vulnerability that you could seek out.
As a club, there was never any middle ground with Newcastle. They were as high as the sky or in a pit of despair.
Martin Skrtel is good at rattling the opposing centre-forward.
A cup final is all about seizing the moment. You cannot put right a mistake or a missed opportunity the following week.
As a player, I loved being tackled, whether it was in training or in a game. I took a full-blooded challenge as an invitation to do exactly the same thing to an opponent. I would wait for my opportunity and nine times out of 10, I would get him back.
I was lucky enough to play at Old Trafford, and we always talked about the atmosphere on a Tuesday night, the special atmosphere you create, and the crowd is rocking when you go out for a warm-up.
At United, we like to have wingers who give the team width and pace.