The Blues winger has been forced to sit out the last two games against Villa and Sunderland after sustaining a hamstring injury while on international duty with Australia and the game with Boro on wednesday night may just prove to be too early for Stan to make a return to Steve Bruce's first team squad.
"I would think its maybe too early for next Wednesday," Bruce told Capital Gold Radio on Friday night.
Bruce is however hopeful that England international centre-back Matty Upson will be in contention for selection for the re-arranged game against Steve McLaren's side at St. Andrews.