The 24 year-old joined Dortmund from SC Weidenbrück in 2016, but has yet to make a competitive appearance for the first team. Bockhorn’s youth career saw him progress from amateur side TSV Meldorf before growing through the youth ranks at Werder Bremen.
“We are in the process of frantically securing for him dual citizenship because he currently holds Germany citizenship. The coach wants him to play the game against Tanzania on 24th March in Dar es Salaam,” said Sebastian Desabre, coach of the Ugandan national side.
The Terrier's are on the brink of relegation to the Championship as they sit bottom of the Premier League, 13 points from safety. Siewert will no doubt be looking ahead to building a squad ready for second tier football should they fail to stay up.