The Reds travel to Vicarage Road after a woeful first month of the season which has seen them pick up just one point from a possible 15 but Hassell is likely to return from an Achilles injury picked up in the 1-0 defeat to Leicester.
Burton told www.barnsleyfc.co.uk: "Bobby is doing well. We are expecting him to go back into full training before the end of the week and are hopeful of having him available for Saturday".