Cardiff Blues head coach Danny Wilson has been appointed forwards coach at Wasps for the 2018-19 season.
The 40-year-old he would be leaving the Welsh region at the end of this campaign.
Nottingham Rugby head coach Ian Costello is also joining Wasps during pre-season to complement the coaching talent already in place.
Wilson joins Wasps’ Welsh director of rugby Dai Young – formerly Blues coach – at the English Premiership side.
Costello’s responsibility will be skills development and exits, with Young saying the club were expanding their coaching team in line with other English Premiership clubs.
“While I have only worked with Danny for a limited time when he was part of the Academy set-up at Cardiff Blues, I know he has gone on to forge a very strong reputation as a quality coach,” Young told the club’s website.
“Equally with Ian, everyone I know who worked with him at Munster, and also as part of our loan arrangement with Nottingham Rugby, can’t speak highly enough of his rugby knowledge and attention to detail.
The Blues are also losing their backs coach
Former Ireland international Geordan Murphy – currently assistant coach at Leicester – is among the favourites to take over at the Blues from Wilson next season.