Premier League Spotlight previews the weekend's top-flight fixtures, highlighting the key points to keep an eye on as the action unfolds. Under the microscope this week: Andre Villas-Boas' tirade ahead of Chelsea's home game against the table-toppers, a fragile-looking Newcastle side as injuries take their toll, questions being asked of Manchester United, a cure for insomnia at Villa Park, and the tale of the "obvious goalscoring opportunity".

Andre Villas-Boas: Why, oh, why?

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