The Birmingham midfielder will discuss the situation with club boss Alex McLeish before making any decision on his international future.

Ferguson was not considered by his country after much-publicised off-the-field incidents when on Scotland duty last season.

Levein has held talks with the 32-year-old and indicated he wants the former Rangers captain to return to the fold for the Euro 2012 qualifying campaign and add to his 45 caps.

Ferguson told Press Association Sport: "Myself and Craig Levein have agreed with each other to keep what has been said private. I've still got a lot of thinking to do and I am nowhere near a decision.

"I am fully committed to Birmingham. I will give them a full season. They took a chance on me when people were knocking me down. I owe them everything.

"I have all that to take into account and it will be a long time before I decide what I do."

Ferguson revealed Levein is the only coach he would have considered returning to play under for Scotland.

He said: "As soon as Craig got announced as Scotland manager I said he was the right man for the job. He is the only guy I would probably consider coming back to play for.

"As I said, I am nowhere near a decision and I need to sit down and go through a lot of things.

"If it means I go away and come back, and I'm not going to play here well, there is no chance of me going back. There is still loads to discuss.

"But the meetings were good and he is a guy I respect and he has given me time to go away and think about it.

"There are loads of things I have to take into consideration and I have to be honest with the gaffer (McLeish) as well.

"He has given me a platform to come down here and play. I've not had a long chat with him yet. I need to sit down and see what his thoughts are."

Ferguson's comments came after he was publicly encouraged to end his international exile by former Rangers team-mate Kenny Miller.

The striker said: "Barry is a big loss to us, there is no doubt about that.

"I've been watching him since he went (to Birmingham) and I watched his game yesterday. I thought he was absolutely outstanding.

"He is playing in arguably the best league in the world. It maybe wasn't against one of the top teams yesterday, no disrespect to Wolves, but I thought he was an absolute stand-out.

"He is definitely going to be a big addition to the (Scotland) squad if he decides to come back and play."

Asked if Ferguson could be the difference between qualification and another failure, Miller added: "We want our best players playing for the national team and there is no doubt Barry Ferguson is one of them.

"He is not just a squad player, he's a big, big player for the team. We will be absolutely delighted if he chooses to come back and play with us again."

Levein has also confirmed that McGregor and Kris Boyd - who refused to be considered for selection under previous boss George Burley - will both be named in his squad for next month's friendly against the Czech Republic.

Miller said: "We need our best players playing and the three lads are definitely among the best players in Scotland, so if we can get them back in the squad it's only going to enhance our chances of qualification."

He is particularly relishing the prospect of replicating his prolific Rangers partnership with Boyd at international level.

"I would love it," he said.

"He's had an injury over the last month or so and so have I, so that has kind of stopped us a bit.

"But before that we were playing well and the goals were flowing.

"He is a top player at what he does and I'm just happy to have him back."

Meanwhile, Miller admits second spot is the most realistic target for the Scots after being drawn against Spain, the Czech Republic, Lithuania and Liechtenstein in their Euro 2012 qualifying group.

But the Rangers forward believes topping the group and securing automatic qualification is not impossible.

"I don't think we write it off," he said.

"You have to be realistic in the fact that you would probably say beforehand that second place was going to be your best opportunity to qualify.

"But you have seen in the past, when you go and beat teams like France home and away, it's definitely do-able.

"You've got to ride your luck on the night of the games and do the right things as well.

"You never know, on any given night, you can get the breaks and get the results."