A little history --Trump's relationship with the bank started back in 1989 lending him $$ when no one else would. Trump actually sued this bank and they settled and have since loaned to him. They also loan to his son-in-law, Kushner.
Trump's long and winding history with Deutsche Bank could now be at the center of Robert Mueller's investigation.....The bank provided Trump with a $640 million construction loan in 2005 to assist him in building the Trump International Hotel and Tower in Chicago. But the project neared completion right as the financial crisis hit.That led to Trump suing a group of lenders led by Deutsche Bank for $3 billion, rather than repay part of the loan when its due date came. Trump used what was an unusual defense, known as "force majeure," which allows for an extension to pay back a loan under extraordinary circumstances. Trump claimed the financial crisis was the equivalent of a "once-in-a-century credit tsunami" and similar to an earthquake.
Deutsche Bank countersued Trump, and the two parties later settled. They continued doing business together after the settlement. Trump's business was good for the bank and helped make it money, The New York Times reported in July.The bank also lends to Trump's family, including most prominently his son-in-law and White House senior adviser Jared Kushner.............
..........Prior to Trump's election as president last fall, his financial disclosures showed he held roughly $360 million in debt to the bank, with about $125 million in two mortgages for one of the president's major Florida golf courses, Trump National Doral, The Washington Post reported........................
https://www.businessinsider.com/trump-deutsche-bank-mueller-2017-12