The 19-year-old is still suffering from concussion after a collision with Blackburn goalkeeper Paul Robinson on Saturday.
Fabian Delph, who replaced Baker, may again deputise as Ciaran Clark will be required to play at centre-back with Carlos Cuellar (hamstring) and James Collins (calf) still ruled out.
Midfielder Jean Makoun is again suspended after his red card against Blackpool at Bloomfield Road.
Source: PA
Source: PA