Nottingham Forest have confirmed that Rob Kelly will be in charge for Saturday's trip to Bristol City.
Kelly, who was assistant manager to Alex McLeish before his departure on Tuesday, accepted the caretaker role after a meeting with owner Fawaz Al Hasawi.
The 48-year-old will take care of first-team affairs until the club appoint a new manager. Former Forest boss Billy Davies is favourite to return to the City Ground after rejecting an offer from Blackpool.
Al Hasawi told the club's official website: "I've spoken to Rob and he is happy to take charge of the team for the foreseeable future, starting with Saturday's game at Bristol City.
"He's an experienced man and I know the team is in safe hands."
Meanwhile, the club also confirmed Peter Grant and Dr Ian McGuinness, who were appointed to the coaching staff by Alex McLeish, have left their roles.
Substitute Wes Burns, one of seven players to win their first caps, grabbed the opener with a dozen minutes to play before Jonathan Williams and Robert Ogleby sealed a first win for manager Geraint Williams.
Wales, who will face England in their qualification group, should have led after just 15 seconds. Williams took advantage of a slip by Orri Omarsson in the visiting defence, but his curling shot clipped the top of the bar with the keeper beaten.
It proved to be a bright opening quarter from the hosts, and neat play between captain Lee Lucas and left-back Kieron Freeman saw Billy Bodin flash a volley across the six-yard box.
Some brave defending blocked efforts from Lucas and Manchester City's Emyr Huws, but as the half went on Wales became increasingly guilty of trying to be too intricate in attack.
They were nearly punished when Iceland created a first clear opening on 40 minutes as Kristjan Emilsson burst into the area only to shoot into the side-netting.
The visitors were almost gifted a goal early in the second half as Elliot Hewitt's slack backpass was seized on by Armor Traustason, but Wales keeper Danny Ward made the save.
Ward then denied Emil Atlason after the striker was played in by an excellent through ball.
But Wales regained their composure and Burns lofted the opener over the keeper after racing on to Lloyd Isgrove's pass with 12 minutes left.
Williams struck two minutes later as his smart run into the box ended with the Crystal Palace man shooting high into the net, before Ogleby tapped in the third.
In the wake of his side's 1-0 defeat at Old Trafford on January 16, the 58-year-old was charged for a breach of the Football Association's Rule E3, suggesting he had questioned the integrity of officials or implied that they were motivated by bias.
At the time he was unhappy that United had been awarded a penalty while his side were not, in relation to two handball incidents.
Allardyce said: "You see it time and time again at Old Trafford.
"There's no doubt about the difference between Rafael's handball and Jordan Spence's.
"Spence plays for West Ham and the away team, while Rafael plays for the home side at Old Trafford."
The FA confirmed the details of Allardyce's fine on Wednesday afternoon after he had been to a personal hearing, as well as warning him about his future conduct.
