Bob Harris has been given the all-clear and could be available for Sunday's Sky Bet League One clash against Coventry City.
The left-back spent Saturday evening being monitored by doctors at the Northern General Hospital, having taken a heavy blow to the head late in the first-half of Saturday's Emirates FA Cup victory over Oldham Athletic.
But despite suffering concussion, the defender was later released from hospital and this week has been following the FA's training protocol for those having suffered such injuries.
Assistant Manager Andy Crosby explained: "Bob went straight to the hospital on Saturday afternoon to be checked over and came out in the evening, so it wasn't as bad as first feared.
"He now has to follow procedures working closely with our medical staff to ensure he is OK to return to full training later in the week.
"But luckily for us, he has an extra day with the game being on Sunday, so we'll have to see how he goes through the week, but
we are hopeful he could be available to face Coventry."
The Club would like to thank all staff at the Northern General Hospital for the care Bob received during his stay.