Romano reports the 'deal is done' for the young goalkeeper, who is tied to Old Trafford till 2025.
Deano, 25, failed to play a single Premier League game for the Red Devils in 2021/22. He joins Forest in search of regular game time, which the newly-promoted side will be able to provide.
Henderson joins on a loan deal that runs till June 2023, meaning he will spend the entirety of 2022/23 there. The agreement does not include the option to buy, despite being a point of discussion between both sides.
Dean is currently on holiday but is expected to sign the contract - followed by the official announcement - once he returns.