Union Sportive du Pays de Cassel is a football club based in Arnèke in the Nord department of France.

[3] US Pays de Cassel was founded in 2018 after the merger of four smaller local clubs: Hardifort, Noordpenne-Zuytpeene, Bavinchove-Cassel and Arnèke.

[6][7] This set up an encounter with Ligue 1 champions Paris Saint-Germain in the following round, played at the Stade Bollaert-Delelis in Lens as Pays de Cassel's stadium did not meet the criteria to hold the game.

[8][9] At the time, Pays de Cassel had an annual budget of €150,000 while PSG's was €800 million; the two clubs were worth €400,000 and €3.2 billion, respectively.

[11] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.