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The best, most successful managers in the modern era are those who can keep a player happy even if he is not in the team. Given the size of the squads and the use of rotation nowadays, that's tougher than it's ever been.

At Barcelona, I had the best players ever, and they helped me to be a successful manager.

I think every manager is different in their own way.

Alex Ferguson is the best manager I've ever had at this level. Well, he's the only manager I've actually had at this level. But he's the best manager I've ever had.

All the managers in the world, it doesn't matter how good you are, if your players don't understand what you are looking for or what you want, it makes no sense.

I am not saying I am the best manager in the world. But I'm quite good.

Louis van Gaal is one of the most successful managers in the world.

I'm not a defender of old or new football managers. I believe in good ones and bad ones, those that achieve success and those that don't.