He rejected Craig Levein's plea to make himself available for the Euro 2012 kick-off earlier this month. But Birmingham ace Ferguson has now revealed he plans to hold fresh talks with the Scotland gaffer.
He said: "You can never say never in football. I don't have a fear of going out and being booed. To captain Scotland is the pinnacle of your career, is it not? Craig came down to see me in the summer and we had a great chat.
"He's a guy I have a lot of respect for. He wanted an answer before the Sweden game and my answer was No.
"Craig knows I will speak to him. His words were: 'The door will never be shut'.
"It never leaves you and you always want to represent your country.
"Watching the games, you want to be out there helping Scotland get to a major European finals. It does hurt not being part of it.
"When I signed for Birmingham my only concern was to play for them. Moving away from my family, the gaffer gave me time to come back up the road. My break from internationals gives me more time to spend time with the family.
"But to be asked back, it plays on your mind. It's not an easy decision to make."