Michael Carrick will remain in charge of Manchester United's match against Arsenal on Thursday because of a work permit held by Ralf Rangnick.
New travel restrictions came into effect before the new interim manager arrived in England, but he is still waiting for a permit to start work.
The visa application process means that interim boss Michael Carrick will be back in the dug out once more, having already overseen the 2-0 win at Villarreal and the draw with Chelsea.
The club said that Michael communicated this to players and staff in a busy week. The in-form Gunners are coming to town.
The man who arrived in England will not be in the dugout for the game.
The new guidelines came into effect on Tuesday and require people to take a negative test within 48 hours of arriving in England.
The first game in charge by the German will be at home to Crystal Palace on Sunday.
Please use a browser that has accessibility features.
Ben Ransom explains what the fans of Manchester United can expect.
New rules for individuals returning to Switzerland could cause the Young Boys game to be moved to a neutral venue.
The 63-year-old will remain at the club for at least two years in a consulting role after taking charge of the first team until June.
The biggest job is to find a new boss.
Please use a browser that has accessibility features.
Roy Keane, Raphael Honigstein, Jamie Carragher, and Jimmy Floyd Hasselbaink discuss what fans can expect from the new manager of Manchester United.
Jamie Carragher is on Super Sunday.
The appointment of Rangnick will be a positive step in terms of how football is played. The top teams in European football and three of them are in the English premier league, which is what the teams have always wanted to play.
Manchester United were a million miles away from that.
"Rangnick is coming in to make sure that Manchester United get back into the playoffs for next season."
Identifying the next coach is the biggest job that Rangnick has. He will be giving advice to the top people at the club. He wants the next coach to be in his image so he can get them ready for the next coach.
Why is he in demand?
The story of how the Manchester United-bound Ralf Rangnick helped to change German football and inspire other people.
Man Utd's upcoming games.
The kick-off is 8.15pm.
The kick-off for the Crystal Palace game is 2pm.
The Young Boys are playing in the Champions League.
Sky Sports will show the kick-off of the Premier League game between the Canaries and the Cherries.
