Pep Guardiola is expecting Kevin De Bruyne to be out for "weeks" after the Manchester City midfielder suffered a recurrence of the injury which cut short his Champions League final.
De Bruyne was forced off with a hamstring problem in the first half of the victory over Inter Milan in Istanbul in June and broke down again during City's Premier League opener against Burnley on Friday.
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The 32-year-old was substituted after just 23 minutes of the 3-0 win at Turf Moor and was replaced with summer signing Mateo Kovacic.