Isa Nacewa© Photo by David Rogers/Getty Images

Isa Nacewa will return to Leinster ahead of the 2015-16 campaign.

Nacewa, who made 126 appearances for Leinster before leaving in 2013, established himself as a key part of the side that was so dominant in Europe between 2009 and 2012. His final game for the club was the PRO12 final in 2013 and coach Matt O'Connor is looking forward to having him back at the province.

"Isa will have an opportunity to speak for himself in due course but as soon as we became aware that he was keen on a return it was something that we have worked hard to get over the line," O'Connor said. "We mentioned a few weeks back how our resources will be tested during the World Cup window and to be able to bring in a top quality player who we know will contribute massively to the environment when the more experienced lads are away, is huge for us."

Nacewa's game time has been limited since he left the province in 2013 and O'Connor is confident he will get back to match fitness in time for the start of next season.

"He hasn't played in a bit but he hasn't been alien to a rugby environment either working with the Auckland Blues as a mental skills coach and he has really enjoyed his time there. He has kept himself in good shape and was always in regular contact with some of the lads here like Leo. But there is obviously still a feeling that he has unfinished business on the pitch and we are just delighted that he feels that it is with us." ]

Nacewa added: "Obviously, I'm very excited to be going back to Leinster. I spent five brilliant seasons there both on and off the pitch and while the decision to leave was right at the time, I also feel now that at 32 years I've still got something to give. If I didn't grab this opportunity, there will always be a sense of 'what if'.

"I am very grateful to John Kirwan and everyone at the Blues for the opportunity of working with them over the last two seasons. It's not a decision Simone and I came to lightly, but we can't wait to get back there and see what comes of it.

"I've had a number of chats with Matt obviously around my role but ultimately I just can't wait to get back onto the pitch, training and playing and of course running out at a full RDS."