According to Bloomberg, the bank will cooperate and has provided or will provide the information subpoenaed.
“Mueller issued a subpoena to Germany’s largest lender several weeks ago, forcing the bank to submit documents on its relationship with Trump and his family, according to a person briefed on the matter, who asked not to be identified because the action has not been announced.
“Deutsche Bank always cooperates with investigating authorities in all countries,” the lender said in a statement to Bloomberg Tuesday...”
Snort. The subpoena was for show.