Glasgow Warriors flanker Ryan Wilson has been cited for allegedly grabbing the testicles of Saints skipper Lee Dickson in Sunday’s clash at Franklin’s Gardens.
The complaint was made by match citing commissioner Jeff Mark, who saw that Wilson had taken hold of Dickson in the 25th minute of the game, which Saints won 19-15.
Wilson could now face a lengthy suspension, with the low end ban 12 weeks and the top end 24 to 208 weeks.
His case will be heard in London on Wednesday.
Wilson’s Glasgow team-mate Tim Swinson is also in trouble after being cited for allegedly punching Mike Haywood.
Swinson, who came on during the second half of the Champions Cup match at Franklin’s Gardens, was sin-binned in the 75th minute.
And that cost his team dear four minutes later as Harry Mallinder scored the match-winning try to keep Saints in contention for a quarter-final spot.
Like Wilson, Swinson will face a hearing in London on Wednesday.