Houllier admitted "we would sign him tomorrow" if Benzema becomes available.
The 25-year-old made a multi-million pound move from Houllier's previous club, Lyon, to Real last year but is reported to be unsettled.
It would be a massive coup for Villa if Houllier could attract such a quality player.
The Villa boss said: "If Karim wants to come and play at Aston Villa, we would sign him tomorrow."
Source: PA
Source: PA