On Thursday, United confirmed the squad number Sabitzer will wear with the No15 most recently donned by Andreas Pereira.
A number of fan favourites have worn the shirt in recent years, most notably Nemanja Vidic as well as Jesper Blomqvist, Karel Proborsky and, in their early spells in the team, both David Beckham and Paul Scholes.
Erik ten Hag said of his new addition: “We are really happy with that transfer because we need it after Donny van de Beek dropped out, now Christian Eriksen for a longer time and also, I think for a short time, Scott McTominay is also not available.
“So that gives us a shortage of midfield players. But then to bring a quality player in on deadline day that is difficult, and we got this opportunity.”
Sabitzer flew in from Munich as the clock ticked on deadline day and insisted he did not have to think twice about joining United.
He told the club website: “Sometimes in life you have to make quick and important decisions.
“From the moment I heard about this opportunity I knew it was right for me. I am a competitive player; I want to win and help the club achieve its aims this season.
“I feel that I am at my peak as a player, and that I can contribute a lot of experience and energy to the squad. I am excited to start with my new team-mates and manager and to show my qualities to Manchester United fans.”