Keith Earls looks set to follow Marty Moore and Ian Madigan's lead by leaving Irish shores in the summer as he is reportedly ready to reject a new Munster contract in favour of a move to Saracens.
The 28-year-old is seriously considering a three-year deal with the Premiership champions, according to the Irish Independent.
He has played 46 times for Ireland and started all of his country's games in last year's World Cup.
Anthony Foley will hope things don't get even worse for Munster, with Toulouse, Stade Francais and Pau all casting admiring glances at winger Simon Zebo.
Wasps confirmed the signing of Ireland international tighthead Moore from Leinster on Monday, while Madigan revealed his decision to make the move to Bordeaux at the end of the season just after Christmas, following in the footsteps of Johnny Sexton, now back at Leinster, and Paul O'Connell by making the switch to France.
Leinster head coach Leo Cullen said of Moore: "Naturally we are disappointed to be losing a player of Marty's calibre in particular having invested in his development over the years but we wish him well.
"Once he recovers from his hamstring issue we hope that Marty has a big part to play in our Guinness Pro12 run-in."
Ireland start their Six Nations tournament on Sunday week against Wales at the Aviva Stadium (live on RTÉ2) as they chase a third Six Nations title in a row.