London Irish have signed second-row forward Eoin Sheriff from Saracens.
Sheriff, 26, joined Saracens in 2011 from Leinster, having represented Ireland up to Under-20 level.
The Wexford-born lock has made 20 appearances for Saracens, playing in both the Premiership and European Cup.
London Irish operations director Bob Casey said: "Eoin is an ambitious player who has the right character and the right attributes to be a very good player for London Irish."
Sheriff said: "I am really looking forward to starting at London Irish. The facilities at the club are outstanding and their ambition for the future is clear to see.
"It is an exciting move and one I am relishing."