The 26-year-old was due to be under contract to the Sharks until 2026, but he was in advanced talks over a move to Montpellier until they dramatically pulled the plug at the end of March.
Jack Crowley claimed an overdue first senior try as Ireland continued their Guinness Six Nations title defence with a resounding 36-0 bonus-point win over Italy in Dublin.
Relegated Top 14 outfit Agen are in disarray having lost every game they have played this season and conceded more than 1,000 points.
Relegated Top 14 outfit Agen are in disarray having lost every game they have played this season and conceded more than 1,000 points.
Ireland responded to their worst start to a Guinness Six Nations campaign by running in six tries during a resounding 48-10 bonus-point success over Italy in Rome.
Struggling Brive's victory over Montpellier ensured that La Rochelle lead the Top 14 following their hammering of Agen.
