I understand the real reason is so that Coventry can have it as their home stadium from 2021, ready for their Champions League campaigns etc. (I understand from UEFA that it's been decided they will lose 3-1 in the final to PSG). The money will be used to build a new National Stadium on Meadow Lane for Notts to use in theirs from the following season when we beat Marseilles 3-2 in extra time (according to the ref.). It's only right to let Real Coventry have their day in the sun first.