Fulham's reasoning was that a 20,000 capacity at Millwall was not big enough to allow them to grow during their spell away from home. They see moving to a temporary ground as a chance to pick up new fans - meaning the new 30,000-seater Craven Cottage could be filled when it opens.
That is why Twickenham was so popular, but after intensive discussions the RFU has ruled out the possibility of club football at the home of rugby.