The IRFU, Connacht Rugby and Leinster Rugby have agreed a loan deal for scrum half John Cooney and lock Quinn Roux to train and play at Connacht for the 2014/15 season.
Quinn Roux will go to Connacht on an initial deal until December 31 and will link up with Pat Lam's squad next month for the beginning of the pre-season period.
Meanwhile, John Cooney, whose terms have been agreed for the full 2014/15 season, will continue his shoulder rehab with Leinster during the summer months before departing for Galway.
This is the second instance of 'player loaning' from Leinster to Connacht following flanker Conor Gilsenan's recent three-month stint at the Sportsground where the 21-year-old earned three PRO12 caps (two starts) in the back row.
Gilsenan signed off with his first senior try against the Ospreys, before his departure to London Irish.
Galway-bound Cooney has made a name for himself in the Leinster and Ireland underage and Emerging Ireland set-up as a highly intelligent scrum half.
The former Gonzaga College schoolboy, who plays his club rugby at Lansdowne, made his debut with the senior Leinster team in September 2011 when he featured against the Ospreys in Swansea.
He has since gone on to earn 27 senior caps as well as playing a significant role in the success of the Leinster 'A' British & Irish Cup squads. Cooney has represented Ireland at Under-18 and Under-20 levels and also played three games with Emerging Ireland in the Tbilisi Cup last summer.
Also joining up with Connacht next season is 23-year-old lock Roux. The 120kg South African has played two seasons with Leinster having joined from Western Province in 2012. He also made four Super Rugby appearances for the Stormers before departing for Dublin.
Roux has played 21 times with Leinster in the PRO12 and European competitions, while also featuring for Leinster 'A' in the British & Irish Cup, most recently in their 44-17 final win over Leeds Carnegie which secured back-to-back cup titles.
Roux's first season at Leinster suffered a setback when he was forced to undergo shoulder surgery which ruled him out of action for several months.
Despite serious competition for his position, he notched up ten appearances in year two, including a start in the second row for the RaboDirect PRO12 semi-final against Ulster at the RDS.
Speaking about the new deal with Leinster Rugby and the IRFU, Connacht head coach Pat Lam said: "This is brilliant news for everyone involved. We're delighted to get the loan deal over the line and again, I'd like to thank the IRFU and Leinster Rugby, especially Matt O'Connor and Mick Dawson, for their support.
"Our squad is constantly evolving and there will be plenty of new faces at the start of the pre-season. Kieran (Marmion), who earned his first Ireland cap at the weekend, has had a heavy load the last two years and there is a need to manage his game-time a little more stringently.
"With the scrum half position, John (Cooney) will be pushing for a place along with the incoming Ian Porter as well as Caolin Blade from the Academy so it's great for competition.
"With the unfortunate retirement of Craig Clarke, it certainly helps to have Quinn (Roux) coming in to bolster that area and offer us more selection options.
"We've had glimpses of what these young players can do and they are both promising additions to our squad. They are coming from a highly successful team where there is massive strength in depth and huge competition in their positions so this will be a great opportunity for them to push for more PRO12 and European rugby game-time.
"They are ambitious, hard-working men and hopefully they can make the most of their time here. We're certainly looking forward to welcoming them in to our team."
IRFU Chief Executive Philip Browne added: "The IRFU are delighted that this loan arrangement has been agreed as it can only be a good thing in terms of player development and should provide an opportunity for more game-time for both John and Quinn.
"The IRFU are proud to support four strong and developing provinces and believe that the continued development of players within the Irish rugby family will benefit players, provincial and international rugby in the long-term."
They needed a 27-point winning margin against Scotland. They got that and more. The Ireland Women's team captured their second Women's RBS 6 Nations title in style at Broadwood Stadium - relive their Championship winning day in our exclusive video.
It was nail-biting, nerve shredding and epic! Relive Ireland's RBS 6 Nations Championship day from the squad's arrival at Murrayfield to the trophy presentation in our exclusive tunnel and pitch cam video.
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Ireland Women's lock Orla Fitzsimons describes how she was a supporter in the stands for the 2013 Grand Slam success, and now, two years on, she has a Women's RBS 6 Nations winners' medal around her neck.
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Paying tribute to the Ireland supporters at Murrayfield, RBS 6 Nations winner Luke Fitzgerald said: "Thanks a million to the fans from the all guys. They were fantastic. We really felt their support out there, they were the '16th man' and helped us get over the line."
Sean O'Brien scored two tries and produced a man-of-the-match performance as Ireland beat Scotland 40-10 to finish top of the table and retain the RBS 6 Nations title. He spoke to Irish Rugby TV afterwards.
Speaking to Irish Rugby TV after the trophy presentation, RBS 6 Nations winner Robbie Henshaw said: "Words can't describe it...just the whole atmosphere, everyone in the stadium, just the way it ended out. It was pretty intense, the heart was rushing."
Enjoying the post-match celebrations at Murrayfield, RBS 6 Nations winner Rory Best said: "It's been a bit of an emotional roller-coaster, the last hour. The crowd have been absolutely incredible. We're just delighted to give something back to them."