By ESPNSTAR.com staff
Ronaldo recently came out with a statement specifying his fond admiration of his time under Ferguson's tutelage. He spent six seasons at Old Trafford before making a world record transfer to Real Madrid in 2009.
Ferguson was asked on his own thoughts on the matter and whether he would sanction a sensational buyback of the Portuguese star.
The Scotsman, whose side fell to a 1-0 surprise defeat to Norwich on Saturday, was understandably pragmatic with his response.
"There's every chance Ronaldo might leave Real, you never know," Ferguson was quoted as saying by the Sun.
"I would like to think he could return to Old Trafford but I don't think it will happen.
"You're talking about incredible amounts of money.What would you think his value would be? He's definitely unbuyable.
"Who could afford to buy him? There's talk of the Russians, perhaps. But do you think he would go to Russia? He complained about the weather here, let alone the middle of winter in Russia.
"He was definitely good value for Madrid but he always wanted to play for them, it was his boyhood dream."
"I speak to him quite regularly. He's always wishing us well and we'd be the first team he looks for, there's no doubt about that."
"You always miss your good players but they deserved it because they worked so hard."
Ronaldo was less than his usual best against Athletic Bilbao as he drew a blank in Madrid's 5-1 win at the Santiago Bernabeu on Saturday night. He will need to find his scoring boots once more when the La Liga champions take on Manchester City at the Etihad on Wednesday in their Champions League clash.