Bundesliga league leaders Borussia Dortmund have agreed to loan 19-year-old Swedish striker Alexander Isak to Dutch top-tier side Willem II until the end of the season.

"We believe Alex is a huge talent and want to give him the opportunity to gain as much top-level experience as possible," said BVB sporting director Michael Zorc.

"That's exactly what we want for him at Willem II and we will regularly watch his performances in Holland."