U.S. stock futures were a bit down south on Friday as mounting concerns over Germany's largest lender Deutsche Bank ( DB ) unsettled overseas markets, and traders awaited key inflation data. Forecasters see August income also slowing to a 0.2% gain, compared to 0.4% increase seen in the previous month, according to data compiled by Econoday. At 10:00 a.m., forecasters see the consumer sentiment index edging higher in the September flash to 90.1, up from August's final reading of 89.8.