Manchester City have been warned about the Thomas Tuchel factor ahead of the Premier League showdown with Chelsea on Saturday lunchtime.
Having last season coasted to a third title in four years, Pep Guardiola and his star-studded team have started this campaign with 10 points from their opening five matches.
But they are now set for a genuine step up in class at Stamford Bridge. Alongside fellow title hopefuls Manchester United and Liverpool, the Blues have won four and drawn once in their opening games - while £97.5million signing Romelu Lukaku has also hit the ground running with three goals since his summer return from Italian giants Inter Milan.
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