Some Sheffield Wednesday fans are keen to see Bannan replaced by Almen Abdi.
Carlos Carvalhal admits Barry Bannan has not been at his best of late.
Bannan's recent form has caused some Sheffield Wednesday supporters to question his role in the Owls' team, with several this week calling for Almen Abdi to replace the Scot in Carvalhal's midfield.
At a press conference on Thursday, however, the Wednesday head coach defended Bannan's contribution, explaining that his role has differed somewhat in Kieran Lee's absence, and gave no indication that he is ready to replace the 27-year-old against Nottingham Forest on Saturday.
"It was not the best performance of Barry in the last two games," Carvalhal admitted to BBC Radio Sheffield. "Also, I talk with him, but he is a player that all the time do things in the correct way.
"I think in the last game (against Blackburn Rovers) he was a little unbalanced, he did very good things with some poor things, but he is a player I am not worried (about) because I know him very well. He is a fighter and these kind of players they discover the way very soon.
Sheffield Wednesday manager Carlos Carvalhal
"I have good expectations that on Saturday we will see the best of Barry Bannan again."
Bannan, who was named in the PFA Championship team of the year last term, has failed to start just two of Wednesday's 32 league fixtures this season.
And despite being somewhat off-colour against Blackburn, the former Aston Villa man still managed to assist a goal for the Owls - his third in six matches.
Meanwhile, Wednesday are awaiting an update on the fitness of Bannan's central midfield partner Sam Hutchinson, who was forced off in Tuesday's game.
Sheffield Wednesday's Sam Hutchinson in action against Rotherham
Should Bannan start for Sheffield Wednesday at Forest?