Christopher Nkunku: Chelsea boosted by return of ‘difference-maker’ but cautious comeback planned

His absence has been keenly felt by Chelsea, who have missed his goals. There was a collective sharp intake of breath in pre-season when Nkunku went down under challenge from Borussia Dortmund defender Mats Hummels on a dreadful pitch in Chicago, which had hosted an Ed Sheeran concert a few days before.