In this week’s Premier League review Mamadou Sakho is in hot water after failing a drugs test, Leicester shows that they’re not a one-man ‘Jamie Vardy’ band, and Sunderland climb out of the bottom three.

How on earth are Leicester City sitting at the top of the Premier League?

It will be the subject of Ted Talks, business seminars, and even Hollywood movies.

I don’t know all of the secrets, but I do know one. Claudio Ranieri, the man the English media christened ‘Tinkerman’ during his time at Chelsea, has hardly had to field a changed side.