Manchester City could be without top-scorer Ilkay Gundogan for their Champions League final clash against Chelsea after he left their final training session early.The Germany international and losing finalist with Borussia Dortmund in 2013 has proved to be a standout player for Guardiola this season, scoring 17 goals across all competitions.The 30-year-old, who lifted his third Premier League title with the club this season, has enjoyed a spell of full fitness following previous issues - but might now be a worry for his manager.Gundogan appeared cautious when leaving the training field on Friday, having been left on the floor by a shoulder barge earlier in their preparations for the Porto showpiece.The former Nurnberg midfielder had spoken.
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