Donald Trumpis reportedly planning to revamp America's top spy agency after launching months of social media attacks on the intelligence community.

As the president-elect prepared for a much-anticipated meeting with top intelligence officials on Friday, sources close to the transition team said the Republican billionaire was making plans to pare back the Office of the Director of National Intelligence, believing that it had become "bloated and politicised", the Wall Street Journal reported.

The CIA would also face restructuring under the plans, according to the newspaper. Staffing levels at its Virginia headquarters would be cut back while more people would be pushed out into field posts around the world.

"The view from the Trump team is the intelligence world has become completely politicised," a person close to the Trump transition was quoted as saying.