Munster have been cleared of any wrongdoing for allowing Conor Murray to return to action after a head-injury check in their European win in Glasgow in January.
Ireland scrum-half Murray was removed from play in the 62nd minute of Munster's 14-12 Champions Cup victory at Scotstoun, but later returned to the fray.
Murray later said he was "properly p***** off" with Glasgow's tactics of heaping pressure on him, as the fallout from the European clash continued.
Champions Cup bosses European Professional Club Rugby (EPCR) launched an investigation into the handling of Murray's potential head-knock, and have now backed Munster's decision to allow the 27-year-old back into the clash.
"After studying footage and documents submitted by Munster Rugby, the review group was satisfied, on the balance of probabilities, that Murray did not meet the criteria for immediate and permanent removal from the field of play," an EPCR statement read.
"The review group concluded that Munster's medical team - and, more specifically, their team doctor - followed the World Rugby head injury assessment protocol and used the MyPlayXPlay real-time video system that the club had invested in, to review the initial on-field assessment of the injury."