Kamil Conteh has joined Gateshead on loan until January.
Heed, managed by Mike Williamson, are currently 17th in the National League having won promotion last season.
Twenty-year-old midfielder Conteh is a Sierra Leone international, and arrived at Boro in the summer from Watford. He has featured five times for our Under-21s so far this season, and was an unused substitute in the first team's Carabao Cup defeat to Barnsley at the Riverside.