I understand what you are saying shrimp,but the chestnuts would have got the planning accepted for the Quadrant development with or without the stadium being built, this is purely down to the lack of housing stock in Boston, the council has got a government target to reach, on building new homes,which I understand is over a 1000 by 2020.
York Street as fat as I know is still owned by the Malkinson family and not Chestnut Homes, so I would imagine the ground will be sold off to the highest bidder,which may not be Boston United's current owners.