Ultra Europe may be forced to move from the Poljud Stadium in Croatia just weeks before the festival is due to take place.
Europa League football team Gzira United F.C. have announced a rematch at Poljud Stadium which is set to take place 18th July, just one week after the festival.
The announcement has sparked rumours that festival will be forced out of the stadium due to high traffic damaging the pitch, with not enough time to make the repairs between the events.
Ultra Europe are yet to comment on the potential venue issues.
The news comes after a run of bad luck for Ultra, who were forced to look for a new location in Miami after their license was not renewed for 2020.
Ultra Korea were also hit with problems when Swedish House Mafia cancelled their performance earlier this month. Though trio are set to headline the European edition.