Deutsche Bank's spokesman Ronald Weichert declined to comment, when contacted by Reuters.
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Deutsche Bank has already signalled the need to top up a 4.1 billion euro pool of litigation reserves after two major settlements in December. Litigation costs have been, up to now, expected to be the greatest drain on fourth-quarter results.
The German bank was fined $1.9 billion in December by the U.S. Federal Housing Finance Agency to settle claims it defrauded two U.S. government-controlled companies in the sale of mortgage-backed securities before the 2008 financial crisis.
It was also fined 725 million euros by EU antitrust regulators for rigging interest rates.
Lightening the load
Separately, the bank has reduced assets to bolster its capital ratios, with Deutsche lightening the load at a rate of about 30-40 billion euros per quarter. Deutsche last year earmarked 250 billion euros in assets to trim from its balance sheet - some which occurred through sales and others by reducing credit lines or other accounting measures.
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Any major problems with those reductions would come as a surprise to investors, for the bank has offered no indications to date that those reductions have proceeded poorly.
But Deutsche is widely expected to have suffered weaker revenue in the last quarter due to a fall-off in fixed income trading volumes, one of the bank's most important money makers and areas of strategic importance.
The bond market softened already in the third quarter of 2013 as investors braced for higher interest rates, a shift that affected trading, underwriting and investment income for Wall Street banks including Goldman Sachs.
Industry wide, bond trading has come under pressure due to new regulations that restrict activities such as proprietary trading and others that make it more expensive for banks to trade or hold securities on their balance sheets.
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Analysts on average expect the bank to earn 0.48 euros (65 cents) on revenue of 7.55 billion euros ($10.24 billion) in the fourth quarter, according to Thomson Reuters.
Deutsche Bank's U.S.-listed shares closed down 3 percent at $52.27 on Friday on the New York Stock Exchange.