Nick McCarthy has re-joined Leinster from Munster ahead of the 2021/22 season.
The 26-year-old scrumhalf came through the Leinster Rugby Academy, scoring four tries in 36 appearances for Leinster before signing with Munster ahead of the 2019/20 season.
"Nick is a player we know very well. We know the qualities that he brings as a player but also as a person and the additional experience he now has from two years in another environment is an added advantage” said Leinster head coach Leo Cullen.
"We look forward to him joining us for pre-season and welcoming him back to UCD."
McCarthy has been capped at Ireland Under 20s level and captained them at the 2014 U20s World Cup.
"I want to thank everyone for my time in Munster Rugby. It’s a special club to play for with a great rugby culture” said McCarthy.
“I have really enjoyed the experience, learned loads and made friends for life” McCarthy added.
"I am excited now to get back to Dublin in the summer. I will continue to challenge myself, compete at the highest level and hopefully add value to the squad in Leinster." said McCarthy.
McCarthy made his Leinster Rugby debut in December 2015 in the Aviva Stadium against Toulon in the Champions Cup and his last game for his home province was the Guinness PRO14 Final against Glasgow Warriors in Celtic Park in 2019.
DOB: 25 March 1995
Height: 1m 80cm