A bid from Premier League club West Ham United was rejected last week and McDermott does not expect any further interest from the Hammers or anyone else.
"The bid for Ross was rejected on Friday and I've have spoken to [West Ham manager] Sam Allardyce since and he has said that they won't be coming back in for him," McDermott told the club's official website.
"I am confident that he will be here after the window closes on Friday. Ross has never asked to leave. He is my captain and he is a talisman for our team."