Should Chelsea be worried? Never go back? A closer look

Jose Mourinho's long-awaited return to Chelsea flies in the face of all logic - be it in football or in personal relationships, the general rule for life is never to go back to an ex. Mourinho's new four-year contract is an extraordinary commitment, one that many suspect will not last the duration, but the intention is clear - things will be different this time, they promise! Let's have a look at some managers that tried to re-create the old magic.

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