Disney open to selling ABC; talks held with Nexstar, Allen

Disney has held exploratory talks about potentially selling ABC to Nexstar Media Group or Byron Allen.
Disney denies reaching a deal but says it's open to strategic options for its linear TV assets.
Nexstar has expressed interest if Disney provides clarity; Allen reportedly offered $10 billion.
Iger aims to focus Disney on streaming; linear TV faces declines.
ABC News staff concerned about uncertainty, changes under new owner.