why does everyone think he'll be out of madrid so soon?
Rumours.
Heard an interesting discussion about it on Talk Sport the other night. Their "in the know guy" said Madrid are close to FFP limits so may need to sell. With Reus rumoured to be sewn up by Madrid and apparently only costing £20 million, it looks like good business. Also, apparently Bale's misses is a bit homesick too, and friends reported saying that Bale himself was missing home, and Wales in particular.
I would say more rumours but it isn't that far fetched and after Perez selling Di Maria last year, who knows?