Wasps have appointed Leon Holden as their rugby director until the end of the season.
Holden returns to the Aviva Premiership club, having been part of Wasps' coaching staff between 2005 and 2009, when the Londoners won European and domestic titles.
The move for Holden comes after Tony Hanks left the director of rugby post last week.
Wasps made a pool stage from this season's Heineken Cup and are battling to make the Premiership title play-offs, although they have secured a place in the Amlin Challenge Cup quarter-finals - Europe's second-tier competition.
Head coach Shaun Edwards, who is also Wales' defence specialist, took charge for the 21-12 league defeat against champions Leicester last weekend.
Wasps say Holden will lead the squad while their search continues to find a replacement for Hanks.
Club chief executive Chris Thomas said: "At this point of the season, it was vital that we selected the right person to support Shaun Edwards and the technical staff to oversee the squad's remaining involvement in the Aviva Premiership and Amlin Challenge Cup.
"It is an added bonus that Leon is well respected by the players and staff.
"We have been through a quick, but vigorous, selection process, and we are delighted that Leon has accepted and will rejoin the club."