Ghana defender Rashid Sumaila is yet to join his new teammates in Austria for pre-season following visa problems.
The 25-year-old passed his medical on Wednesday before putting pen to paper on the season-long deal from Kuwaiti side Al Qadsia which comes with an option to join the Serbian side permanently.
The Ghana international will be hoping to hit the ground running when the Serbian SuperLiga campaign kick-start next month.
Sumaila will have the opportunity to play in the UEFA Champions League with his new club.