I wonder whether Joe's two years refers to obtaining all permissions, agreements on funding, making the land purchase and starting on site.
By comparison, Spurs who must be 18 months ahead of us in the process, are aiming to kick off the 2018/19 season in their new home. That is two years away! And a ground has to be ready months ahead of that for safety testing, certificates being issued etc.
Joe is going to have to clarify what he means by two years here. I'm concerned he is creating a rod for his back, giving out a glib comment that has no real foundation (no pun intended).