Bankers have been submitting proposals to AT&T to sell off its DirecTV unit, with Dish Network a potential suitor, Fox Business reported, without attribution. AT&T is being targeted by activist investor Elliott Management, which has called on the telecom giant to sell off DirecTV. Among the deals being pushed is one where DirecTV teams up with Dish Network by spinning off the companies into a separate unit or a merger that could be financed with capital from private equity firms, the report said.