Adnan Januzaj play for England under the rules set out in the Home Nations agreement. The Home Nations agreement requires that players engage in a minimum of five years of education before the age of 18 within the territory of the relevant association and do not offer national team eligibility through residency. Despite having played competitively for Belgium at senior level, Januzaj remained eligible to represent Kosovo, as it was not a UEFA or FIFA member when he made his Belgian debut. However, once he made another appearance with Belgium after 2016, the year in which Kosovo became a member of FIFA,
Adnan Januzaj play. He made his Premier League debut a month later, coming on as a 68th-minute substitute for Ashley Young in a 2–0 home win over Crystal Palace on 14 September. On 5 October 2013, in what was his first start for the club, Januzaj scored twice as United came from behind to claim a 2–1 victory away to Sunderland. In an effort to stave off interest from other clubs, who could have signed Januzaj for "minimal compensation" on the expiry of his existing contract in June 2014, Manchester United signed Januzaj to a new five-year contract on 19 October 2013.