Michael Carrick will remain in charge of Manchester United for their Premier League game against Arsenal on Thursday night (23.15) because a new interim manager Ralf Rangnick is still waiting for his work visa.Under Carrick’s guidance, United defeated Villareal 2-0 in the Champions League and drew with reigning European champions Chelsea in the English Premier League.On Monday, United confirmed the appointment of Rangnick as their interim boss, but the German ought to wait for his first appearance in the dugout.It’s official: The German has arrived to Old TraffordA statement on United’s website read:”Ralf Rangnick was announced as interim manager on Monday but, while the club follows the regulatory process around a work visa, Carrick will continue at the helm.”Michael has communicated this to players and staff at Carrington in a busy week for the club.”THU: 23.15: (2.10) MANCHESTER UNITED (3.50) ARSENAL (3.80)At the same time, English authorities will decide whether Rangnick deserves his job. After Great Britain left the European Union, gaffers get a visa if they have been sitting on the bench of a top-division team for a minimum of 36 months cumulatively – or 24 months in a row – in the past five years. In that period, Rangnick spent only 11 months as a coach in Leipzig, spending most of his time in director positions, so United now have to prove to the independent commission that he is a tactician of “the highest calibre” who will “significantly contribute to the development of English football”.