James Cronin, John Ryan and Cathal Sheridan have all signed two-year contracts with Munster Rugby and the IRFU that will see them stay with the province until at least June 2016.
Sligo man Sheridan played with Connacht before making the move to UL Bohemians where he plied his trade under the tutelage of current Munster skills coach Ian Costello. In 2010 he featured for the Ireland Club International XV squad.
The 25-year-old scrum-half moved to the senior set-up at the start of season 2012/13 after completing two years in the Munster Academy, and he made his league debut in February 2013 against Edinburgh in Musgrave Park.
Sheridan (right) went on to make his Heineken Cup debut against Gloucester in October, making his first start at European level in Munster's dramatic 18-17 victory away to Perpignan. He will make his 20th appearance for Munster tonight at Ravenhill.
Versatile Cork prop Ryan has represented Munster at Schools, Under 19 and Under 20 level, and played with the International Club XV side in 2011 and 2012. He travelled to Georgia as part of the Emerging Ireland squad for the Tbilisi Cup during the summer.
The 25-year-old started his first game for Munster against Zebre in the final game of last season and has continued his progression this term having featured in seven games.
Fellow prop and Leesider Cronin has exploded on to the scene this season, playing in 14 games and scoring three tries.
A product of the Munster Youths system, Cronin made the move to senior level at the start of the 2013/14 season after completing two years of the academy programme, during which time he impressed at A level.
He finished last season with two PRO12 appearances, making his senior debut against Leinster in Thomond Park in April.
The 23-year-old made his Heineken Cup debut against Edinburgh in Murrayfield in October and his first start at European level was away to Perpignan in December.