<I have broadcast channels only.

The age of the Sphinx relative to the Great Pyramid of Cheops (AKA Akhet-Khufu [The Horizon of Khufu]), though, has always been a source for lively debate among archaeologists, antiquity specialists, and the loud majority who latch onto a single fact, running it for all it’s worth. Some believe it was constructed at an earlier time, predating all visible structures on the Giza plateau, while others say it was a joint-project with the Great Pyramid of Khufu, or younger still. In truth, the age could be anywhere from 4,500 to 15,000 years.

The age of the Sphinx

"The argument hinges on weathering of the in situ rock. Erosion is the process which removes material; weathering is the process which degrades the rock in place. Schoch has indicated that the rounded profile of some of the Sphinx was due to 'precipitation- induced weathering' rather than 'wind-induced weathering' which supposedly produced a straight profile on other sculpted rock structures. Supposedly there was only sufficient water to produce this 'precipitation-induced weathering' during a wet period some 7000 years ago. Thus Schoch makes his argument for increased antiquity. West has pushed this age back further (I'm not sure on what basis; I'm not really interested in reading West) and has tried to relate it to Atlanteans.

"Schoch's ideas ignore several things. 'Precipitation-induced weathering' versus 'wind-induced weathering' producing different lithologic morphologies is not an accepted idea, rather variations in the rock usually account for the different weathering morphologies. If the 'precipitation-induced weathering' occurred 7000 years ago and the 'wind- induced weathering' occurred on structures 4500 years old, why didn't the 'wind-induced weathering' obliterate the older ‘precipitation-induced weathering’? Gauri et al. (1995; Geoarchaeology, V10, #2, pp119-133) have been working on the Sphinx for years studying its rapid weathering and have found that the rapid weathering (which predates high atmospheric acid content) is due to formation of salt crystals in the rock pores which causes exfoliation due to hydrostatic pressure. This exfoliation results in a rounded profile similar to that which Schoch indicates could only be due to 'precipitation-induced weathering.' All in all, Schoch seems to have focused on one explanation and ignored several other working hypotheses."
(Source)

The Sphinx Controversy

“A research team has discovered physical evidence that the Great Sphinx of Giza, Egypt, may date from 5000 and 7000 BCE and possibly earlier. In response, archaeologists have thrown mud at geologists, historians have been caught in the middle, and the Sphinx, having revealed one secret, challenges us to unravel even greater ones.”
(Source)

BTW, considering the mass of the sculpture, I wouldn't expect anyone of the period to really want to move it very far from the quarry site. The idea that slave labor was a major force for the construction of the Pyramids and Sphinx is run entirely by Hollywood. The facts, gathered from ancient accounting ledgers, show an incredible number of free masons bartered into service for these monuments -- during the peak of construction, a source-to-product workforce averaging an estimated 15,000 to 25,000 hired persons on any given day.

It can also be pointed out that the Sphinx is actually a carving, not a construct:

The Age of the Sphinx
By Robert Bauval

“The Sphinx is not built with quarried blocks like the pyramids and temples it guards, but carved out of the living bedrock. Its makers gave it a man's head (some say it's a woman) and the body of a lion. It is 66 feet high and an impressive 240 feet long. It has the most extraordinary expression, like a hundred Mona Lisas all rolled into one. And its eyes gaze forever at the distant horizon due east, at the equinox point...at something not of this world but beyond it, in the sky. Something, perhaps, that is reflected or 'frozen' in the essence and age of the Sphinx.”
(Source)

Okay, so Bauval doesn’t exactly follow hard-science and likes to wax poetic, but at least he did appear to stand at the site of the Sphinx and read a few brochures.
;^)

Cheers,
Dan