How will the BBC change after Entwistle's resignation?
A "thorough, radical, structural overhaul" of the BBC is necessary in the wake of the resignation of the director general, BBC Trust chairman Lord Patten has said.
George Entwistle quit on Saturday after a controversial Newsnight report led to a former Tory treasurer being wrongly accused as a child abuser
The BBC Trust has said it wants an overhaul of management structures at the organisation.
Home Editor Mark Easton analyses how the BBC may change.