The draw has been set for Croatia Open Umag which is set to take place between 24-30 July 2023 on the red clay in Croatia.
Marin CIlic on home turf will make his first appearance since January spending most of 2023 injured, but entering US Open on a protected ranking this past week.
But will begin his preparation on a different surface in clay alongside fellow former US Open winners in Stan Wawrinka and Dominic Thiem.
Holger Rune was due to be the top name but illness and injury have prevented him playing next week. Jiri Lehecka is top seed alongside Lorenzo Sonego in his absence.