There has been speculation the two clubs have already agreed a deal, which would be worth around $25million, to make Carson's year-long loan a permanent transfer.

But Villa boss O'Neill insisted that was "mere hearsay" although he is a big fan of Carson who hit the headlines for the wrong reasons after his costly blunder as England lost their Euro 2008 qualifier with Croatia.

O'Neill said: "Is the Scott Carson deal going through? He is here for the season and we have heard nothing from Liverpool at all.

"Of course, that doesn't mean that you couldn't start talking about something beforehand (the end of the season) and I'm aware Rafael Benitez mentioned something about it a week or so ago.

"But Liverpool haven't spoken to us - and haven't spoken since Scott was capped for England."

O'Neill added: "I will look at the situation and Liverpool will be very much in the driving seat because they can dictate what the player is going to cost.

"But there is no agreement on a fee. It is as simple as that. The rest of it is hearsay."

O'Neill was today awaiting the results of the scan to determine the extent of midfielder Stiliyan Petrov's hamstring injury.

The Bulgarian international limped out of the first half of Saturday's 2-1 home defeat by Arsenal.

Petrov, who has been showing some of his best form in recent weeks, said: "The injury is frustrating and I just hope it is not too bad and I can be back sooner rather than later."

Villa have signed promising Austrian keeper Thomas Dau on a three-year deal.

The 16-year-old impressed on a recent trial at Bodymoor Heath and will link up with his new Academy team-mates once Villa secure international clearance.

Villa's academy director Bryan Jones said: "Thomas was on trial with us for two weeks and we were all very impressed with him.

"We definitely think he's one for the future."