Cristiano Ronaldo's mysterious absence from the Manchester derby has proved the weight of Thomas Tuchel's authority at Chelsea.
The five-time Ballon d'Or winner was forced to miss the highly-anticipated bout due to injury, which Roy Keane has since questioned.
Ronaldo reported discomfort in his hip flexor - an injury which has already troubled him this season - to the club's medical staff ahead of the tie before soon flying to Portugal, leaving his teammates 'surprised' by his decision to do so, according to The Athletic.
