Youngsters make short move to Victoria Park.
Development squad players Connor Oliver and Scott Harrison have joined League Two side Hartlepool United on youth loans.
Oliver (pictured), 20, has made six appearances for the U21 side this season.
Central defender Harrison, also 20, joined Sunderland from Darlington in 2012 having made ten senior appearances for the Quakers.
He had a loan spell with League Two side Bury in November 2013.
Harrison has made 14 appearances for the U21s this season.
Colin Cooper’s men sit 11th in Sky Bet League Two and both players could be in line to make their debuts against Cheltenham at Victoria Park this weekend.