But the £3million summer signing came through 90 minutes in Wales Under-21s' 4-1 win over Hungary in midweek and is likely to make his full debut, with Blades manager Kevin Blackwell ready to make changes after the midweek Carling Cup defeat to Port Vale.
Mark Bunn, on loan from Blackburn, could return in goal following Ian Bennett's howler on Tuesday night that gifted Vale their second goal. Paddy Kenny remains suspended after failing a drugs test.
Striker Jamie Ward is available again after his two-game ban and will be vying with Darius Henderson and Billy Sharp to partner Evans up front, while David Cotterill, Kyle Walker and David Carney all return from international duty.
Lee Williamson is missing with a back injury and Lee Hendrie is suspended.