Don't book your flight just yet.
Here's a link to the article in the Sun (UK):
The article is fact-poor, and the photos from the Ministry of Antiquities are vague so far. Since it was found on the road between Karnak and Luxor, it's doubtful that it's older than New Kingdom, maybe 1200 BCE or thereabouts.
Since the spokesperson talks about lifting it eventually, it may not be all that big. OTOH, that raises the possibility that there are more nearby.