Flanker Sean O'Brien has rejected the advances of Toulon to sign a new contract to stay with Leinster.
The 26-year-old's new central contract is a clear boost to the Irish Rugby Football Union, which confirmed the news in a tweet. The union had feared losing the imposing back-rower to the Top 14.
O'Brien was a guest at Toulon's Heineken Cup clash with Cardiff in Nice on Saturday as he weighed up a lucrative offer to join the cash-rich French giants.
Instead he has pledged his future to home province Leinster and the Ireland national team.
Ireland bosses will now turn their attention to O'Brien's Leinster team-mate Jamie Heaslip, with the 30-year-old out of contract in the summer and also considering an offer from Toulon.
O'Brien will miss the upcoming RBS 6 Nations with a shoulder injury, but his renewed commitment will increase IRFU confidence it can now convince Heaslip to follow suit.
Ireland and Lions fly-half Johnny Sexton joined Racing Metro in the summer, leaving his national team bosses with no say on how frequently he plays.
The 28-year-old was put through 13 games in 10 weeks in the build-up to Ireland's autumn series, culminating in a hamstring injury that left head coach Joe Schmidt admitting Ireland had "lost control" of the player.