Leinster have confirmed that Jimmy Gopperth will join Wasps at the end of the season.
The fly-half had been linked with a move away with Jonathan Sexton due to return to the province next season.
Explaining his decision, the 31-year-old said:"This was a very tough decision but at this stage in my career I think it is the right decision and the opportunity to play for a club like Wasps was the right one to take."
The New Zealander has scored 280 points in 45 appearances for the province since signing at the start of last year.
Leinster will face Wasps in a potential make-or-break clash in the final round of pool games for this season's European Champions Cup, but Leinster head coach Matt O'Connor says that he is confident that the player will continue to give the same level of commitment and application that he has always played with for Leinster.
He said: "Jimmy and I have spoken and true to his nature and his professionalism you can be sure that we will get the same level of commitment and application that we have always received from Jimmy. He still has a huge role to play for Leinster Rugby this season."