Dortmund announce Ji deal

Borussia Dortmund have announced South Korea striker Ji Dong-won will join them after his six-month stint at fellow Bundesliga outfit Augsburg.

The 22-year-old left Sunderland this week and will spend the rest of the season with Dortmund's league rivals before heading to his next club in July, once he becomes a free agent.

"Ji Dong-won is a player who can play in a variety of positions in attack. We are pleased to have signed this talented player for next season on a free transfer," said Dortmund's sporting director Michael Zorc on the club's official website.

Ji, who has 26 caps for South Korea, signed for Sunderland in June 2011 but made just 28 appearances for the club.