Borussia Dortmund are close to signing Australian goalkeeper Mitchell Langerak from Melbourne Victory, the Bundesliga club said. "It is true there is a basic agreement between the two clubs in place," Dortmund sporting director Michael Zorc told reporters. "He represents a modern way of goalkeeping and we are interested in developing his skills further." Langerak, 21, will undergo a medical at Signal Iduna Park before completing his move to the German outfit.