Michael Liddle has returned to Sunderland.
Liddle has returned from his loan spell at Npower League One side Leyton Orient.
The 20-year-old has struggled with injuries so far this season and made just a single appearance for the London outfit, in their opening-day defeat at Yeovil.
Liddle has previously spent time on loan at Carlisle and made his first-team debut for Sunderland in the 3-0 FA Cup win over Barrow back in January.