When you have a son in football like Anton, it will always be deemed as if he got the prop up and given the contract, no matter how hard he works. So much so that when he was offered a deal at Chelsea, I advised him not to take a professional contract.

What you have in Scotland is an unpredictability with surfaces - and I've already said you don't get good games on artificial turf - and that can affect performances and results.

There's different types of strikers: Harry Kane is a wonderful finisher, Jamie Vardy has great pace and has come onto the scene exceptionally well and is playing consistently, and Wayne Rooney is a player I have admired during all of his career.

It was important for me, when I left a club like Liverpool, to one, have a breather, but then my next job, I needed pressure. And there's a pressure at Celtic. It's a huge club; there's an expectancy to win every game.

Managing by values - not by profits - is a powerful process that will set your business on the path to becoming what I call a 'Fortunate 500' company.

Every newspaper in the country covers stories that other newspapers cover. Every industry is filled with people who are competing to do the best job providing a particular service.

A lot of people say I tried to emulate Tupac, but when I look back at my career, we're very different artists. I took pages out of Pac's book, of course, and lots of other rappers - Biggie, Nas - of course you take pages out of those books, but you eventually make it your own thing. And I think I did a good job of that.

I had to go to Hollywood to recharge my career.