Dortmund have confirmed the signing of André Schürrle from Bayer Leverkusen in a £19m transfer that sees goalkeeper Mitchell Langerak go the other way, with Leverkusen also purchasing promising striker Daniel Ginczek for £3m in a separate deal.
23 year-old Schürrle has been capped 35 times by Germany, scoring 11 goals, the most recent of which was the opener against Argentina in the 3-1 Quarter-Final win at the FIFA World Cup last week.
The midfielder was at Leverkusen for three seasons after a £6.75m move from FSV Mainz. He appeared in all but three of their Bundesliga matches in that time, scoring 22 goals.
Schürrle will wear #14.