Munster and the IRFU have confirmed that coaches Jerry Flannery and Felix Jones are to leave the club at the end of the season.
Forwards coach Flannery, who made 94 appearances for the province, joined the backroom staff in 2013, while attack coach Jones, who has 90 Munster caps, has been assisting since 2016.
Munster said both men "declined their respective contract offers".
Before last month’s Champions Cup semi-final defeat to Saracens, head coach Johann van Graan told RTÉ Sport: "In terms of the coaching staff we’re really enjoying it and that will be the next step in our decision-making.
"We’ll have a review after the season and then move forward next year.
"Hopefully we can keep everyone involved and maybe look at bringing in some additional faces and some new blood with some new ideas."
Former player Paul O'Connell, who is to leave his coaching role with Top 14 team Stade Francais shortly, confirmed to RTÉ last month that a move to Munster is not on his short-term radar.
"I think you'd have to be very, very sure before you ever went back there or if they ever wanted you to go back there," he said.
"For me I'd have to gather a lot more experience to have the confidence to do the job well. I won't be back there in the short-term future anyway."
Munster Rugby Acting CEO Philip Quinn said: "As Johann has noted all along, the province was committed to retaining the services of both Jerry and Felix, and I believe the Professional Game Board made every effort to retain the coaching duo with competitive terms.
"While we understand their respective decisions, we are hugely disappointed with the latest development, but wish them every success in the future."
Van Graan added: "We will be very disappointed to see Jerry and Felix go at the end of the season."
Speaking about his departure: Flannery said: "This has been a dream job for me.
"Leaving the province is not a decision I took lightly, but I look forward to watching the squad go from strength to strength, and wish them continued success."
Jones said: "It has been an absolute honour to have played for, and to have coached Munster Rugby. I would like to thank the players, coaches, management and fans who have supported me over the last 10 years.
"We will continue our drive to end the season on a high, and I look forward to being a Munster supporter in the future."
The province, who face Leinster in the Guinness Pro14 semi-final on 18 May, say they have started searching for replacements to join Van Graan and defence coach JP Ferreira for next season.
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