Not getting the Olympic stadium on the cheap due to an administrative cockup put a major spanner in their grand plan.
Spurs owners obviously saw how much income Afc were making at the Emirates compared to Highbury. This year has probably cost Spurs heavily with no fans, no champions league, no NFL & having to use the Government grant, whether that needs repaying I'm not sure.
If fans aren't 100% allowed back in the Stadiums in August it could mean they have to sell Son & Kane for considerable less than they would like too.