Sir Alex Ferguson believes Manchester United's American owners would do anything in their power to keep Cristiano Ronaldo at Old Trafford.

Ferguson has spoken to the Glazer family about Real Madrid's attempt to sign Ronaldo, a transfer saga that has turned increasingly spiteful in recent weeks.

The United boss is furious that Real have so publicly tried to unsettle the Portugal winger. United have even threatened to report Real to FIFA, a move which prompted the Spanish champions to back off, but Ferguson is relieved to hear the Glazers back his hardline stance.

“I've had a couple of meetings with the Glazers. Their attitude is, 'To hell with them'. They'd sit a player in the stand, I'm telling you, absolutely no doubt about it, just to prove a point. Not to give in to these people,” Ferguson said.

“They've got balls, I can tell you. I've been delighted with them in that respect.

“They've been good to this club, believe me. They have been brilliant owners.”

Ronaldo, meanwhile, said that he intends to make a decision on his future in the coming days.

“There'll be news shortly. I'll make a decision on my future in two or three days,” the told journalists after Portugual's 2-0 Euro 2008 warm-up win over Georgia on Saturday night.

The Portuguese star leaves with his national team for Switzerland on Sunday for the European championships which get underway on June 7.