Actually
I wouldn't doubt that, but so what? The idea is so heinous to the Palestinians that they don't even try it. And let's face it, it would be really politically smart to offer.
Now, the Israelis are never going to return to the '67 borders if that means giving up East Jerusalem and the Temple Mount. After the Jordanian's didn't allow the Israelis to visit the Western Wall for 20 years, that's never going to happen.
The right of return can't happen either if Israel is to remain Jewish in nature. Best thing on that score that can happen is money changing hands.