Keegan got his first taste of League of Ireland football when he was loaned to St Patrick's Athletic in 1999.
Clarke returned to League of Ireland football in June 2011, signing for his former club Drogheda United.
Keely's family have played League of Ireland football at various levels.
It was the first time in the history of League of Ireland football that a club had folded mid season due to financial reasons.
A veil of secrecy has been thrown over Derry's final preparations for their All Ireland senior football championship decider against Cork.
In June 2011, Hurley returned to League of Ireland football following a 4 year absence to join Bohemians on an amateur contract.
James returned to League of Ireland football in 2007 with Galway United.
Barrett returned to League of Ireland football with Longford Town in 2002.
The Northern Ireland football league system includes the IFA Premiership.
And a lot will depend on the 27-year-old tomorrow when he gets his first taste of League of Ireland football.