The 22-year-old joined his teammates in Serbia earlier this week to begin their preseason exercise for the new season.
He was in Ghana for holidays after helping FK Cukaricki to finish sixth on the Serbian Super Liga table.
The Ghana international has contract with the Black and White lads until summer 2020.
Owusu was explosive in his debut season for FK Cukaricki where he netted four goals with two assist in his 34 appearances.