A tribute match in honour of the late Liam Miller has already sold 38,000 tickets with organisers now expecting a sell out.
Miller, who played for a number of European clubs including Celtic and Manchester United, passed away in February at the age of 36 following a battle with cancer.
A game featuring an Ireland & Celtic XI up against a Manchester United Legends side has been organised since, with the match set to be played on September 25 at Páirc Uí Chaoimh in Ireland.
The 45,000-seat venue is already close to filling out over a month before the game kicks off with interest in the match described as 'phenomenal' by organisers, who pushed for the game to be held in the bigger venue.