Dortmund set to seal Langerak deal
The 21-year-old will have to pass medical tests before the deal is completed, the club said.
"It is true there is a basic agreement between the two clubs in place," Dortmund sports director Michael Zorc told reporters.
"He represents a modern way of goalkeeping...and we are interested in developing his skills further," Zorc said.
He is expected to be the number two keeper in the club behind Roman Weidenfeller.