Creditors to US satellite television firm Dish Network plan to block a distressed exchange that’s a key part of its tie-up with rival DirecTV, according to people familiar with the matter.

The deal, which is subject to regulatory approval, would create one of the largest pay-TV distributors in the U.S. The companies were blocked in an attempt to merge in 2002.

DirecTV's agreement to buy the Dish satellite and streaming TV business from EchoStar is facing opposition from Dish creditors who would be forced to take a loss on the value of their debt. Dish creditors "plan to block a distressed exchange that's a key part of its tie-up with rival DirecTV,

Charlie Ergen’s decades-long dream to combine his satellite-TV company Dish Network Corp. with rival DirecTV hinges on the willingness of creditors he has irked in the past to write off part of their investment in the heavily indebted company.