The citing complaint made against Glasgow Warriors' Ryan Wilson for allegedly grabbing the testicles of Northampton Saints scrum-half Lee Dickson has been dismissed.
Scotland international Wilson was facing the prospect of a hefty ban having been cited in the aftermath of Warriors' 19-15 defeat to Saints in the European Champions Cup on Sunday.
The low end punishment for such an offence is 12 weeks, but an independent judicial officer ruled there was not enough evidence against Wilson.
A statement from the European Professional Club Rugby (EPCR) read: "The independent Judicial Officer, Simon Thomas, heard evidence from Wilson, who pleaded not guilty to the offence, and from Dickson.
"He also heard evidence and submissions from the Glasgow Warriors Rugby Operations Manager, John Manson, from the Glasgow Warriors legal representative, Bruce Caldow, and from the EPCR Disciplinary Officer, Liam McTiernan.
"As the Judicial Officer was not satisfied to the required standard that the act of foul play as alleged had been committed, the citing complaint was dismissed and Wilson is therefore free to play."
The EPCR retain the right to appeal against the decision.
Wilson, 26, has played 15 times for Scotland but he was omitted from head coach Vern Cotter's 35-man squad for the upcoming Six Nations.
Newport Gwent Dragons hooker Rhys Thomas also had a citing complaint against him dismissed.
Thomas was alleged to have bitten Castres back-rower Thomas Caballero in the 67th minute of the Dragons' 31-18 European Rugby Challenge Cup victory on Friday.
However, the judicial officer decided there was insufficient evidence and he is free to play, although the decision can be appealed by the EPCR.