Advertisement Ulster Senior League registrar Jason Gibson and secretary Niall Callaghan pictured with Padraig Cassidy, David Ballintine, Ronan Callan and Raymond Clarke of Monaghan United FC at Gortakeegan Monaghan United join Ulster Senior League Posted: 9:12 pm April 29, 2021 SHARE The Ulster Senior League is delighted to announce that Monaghan United FC has joined the League for the 2021/22 season. Following positive discussions, USL representatives met with members of the Monaghan United executive committee this week when the club’s entry was formally agreed. Monaghan United will play their home games at Gortakeegan and the team will be managed by Raymond Clarke and former ‘Mons’ goalkeeper David Ballintine.