The Rugby Football Union have banned Jersey full-back Barry Davies for three weeks after he admitted striking an opponent in the last month.
The off-the-ball incident also led to team-mate Dave Markham and Rotherham's Daniel Sanderson being sin-binned.
He will miss Saturday's match at Bedford and will also be out of next week's game with Nottingham.
He last year after three seasons with Ospreys and won a Welsh cap against Ireland in the 2006 Six Nations.
"Club officials reviewed the relevant footage from the match at St Peter and decided there was a case to answer regarding alleged foul play," said a club statement.