The 33-year-old was perhaps unfortunate that German referee Felix Brych opted for a red, rather than a yellow, card but there was still risk in engaging with Murillo.
However, according to the Times' Paul Hirst, Ronaldo is unlikely to face any further punishment beyond the automatic one match ban brought by a red card, and will therefore he available to play at Old Trafford next month.
Cristiano Ronaldo will learn next week if he is banned from playing at former club Manchester United in the Champions League.
Cristiano Ronaldo appeared inconsolable for a minute after receiving a red card in Juventus' Champions League win over Valencia.
The encounter will see Ronaldo make an emotional return to Old Trafford, before facing United again, in Turin on November 7. 27 to decide whether to extend the ban.
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The Germany worldwide midfielder added: "I just heard he said it was because of hair pulling".
Ronaldo walked off the field in tears after the incident with Jeison Murillo, leaving Can angered by the controversial dismissal.
Article 15 of UEFA's regulations states that bans of more than one game are for offences such as abusive language towards a match official, serious assault or for receiving a caution or red card on goal.
"Going down to 10 men in the Champions League for an incident like that is disappointing".