The teenager scored as his side beat Novi Pazar in the Serbian top flight in a game that ended 3-1
The 19-year-old playmaker netted Napredak’s second goal with a classic finish in the 76th minute after Veselnovic and Nenad Gavric had traded goals.
Skipper Nenad Mirosavljevic put the icing on the cake with the third in the 86th minute to give the debutants their second away win in the league this season
Regan was efficient in the middle of the pitch together with his Ghanaian team-mate Abraham Akwasi Frimpong as they formed an impregnable partnership.
The Krusevac-based club have now acquired six points out of a possible nine.