Erik ten Hag told Manchester United's Scott McTominay to exploit the space in Omonia Nicosia's box before his match-winning goal.
United welcomed Omonia to Old Trafford in the Europa League on Thursday night and it was a game they were expected to comfortably win, despite the contest between the two sides in Cyprus having been far from straightforward.
Although Ten Hag picked a strong starting line-up and United created plenty of chances, they struggled to break the deadlock as the game progressed, with Omonia's goalkeeper, Francis Uzoho, producing a string of outstanding saves.