Belfast, UK. 9th Feb, 2018. National Football Stadium at Windsor Park, Belfast, Northern Ireland. 09 February 2018. The Irish Football Association today formally announced that Northern Ireland manager Michael O'Neill had signed a four-year contract extension. O'Neill had been contracted to 2020 but the new contract, the longest and most lucrative contract in the association's history, runs to 2024. Michael O'Neill at today's announcement. Credit: David Hunter/Alamy Live News.