On Monday (February 20) night, the National League club tackle Premier League club Arsenal in a fifth round tie at their 5,000-capacity Gander Green Lane ground.
Sun Bets is supporting Sutton in a shirt and ground branding sponsorship deal for the live BBC1-televised cup-tie.
On Monday, Sun Bets organised a Wembley Stadium tour for the Sutton players and a fun training session with Arsenal legend and SunSport columnist Ian Wright.
Sutton manager Paul Doswell said: “It’s great The Sun is backing us for the biggest game in our history.”