Munster have been cleared of any wrongdoing over their handling of the head knock sustained by Conor Murray in their victory over Glasgow at Scotstoun last weekend.
The Irish province were the subject of an investigation by Champions Cup organisers when Murray was allowed to return to the pitch after taking the blow, only to then be withdrawn for a head injury assessment.
Munster, who prevailed 14-12 in the European showdown on January 14, insisted that Murray had not demonstrated any symptoms of concussion.
The European Professional Club Rugby (EPCR) Untoward Incident Review Group found that "Murray did not demonstrate any criteria that should have led to his immediate and permanent removal from the field of play".
The EPCR statement continued: "The player underwent further assessment by Munster's medical team and its specialist advisors and, as such, the decision as to when the player returns to play rests with Munster.
"The group will deliver its full report in due course."