Football

Spurs will not finish 4th. Get it out of your head. Not going to happen this season.
Secondly, it's a World Cup year which means that preseason is very short and if you're unlucky and qualify for the EL you end up starting the season proper 3 weeks after the semi finals of the WC. They should have thought of a replacement before sacking AVB. Short-term ism to the extreme.

Finally, Spurs are a listed company and any CEO that would let his management invest £100m+ in the space of 2 months and subsequently sack him only to replace him by someone who is completely unfamiliar with the job on hand would get sacked because of mismanaging company assets.

4th I agree is a bit of a dream but silly not to hope for something that is currently one win away? Honestly I think the players are of a standard easily good enough - it's the other instabilities that cock it up. If they select a safe pair of hands in summer and let them have 3 seasons at least without interference...

The second thing is more to do with how football isn't really suited to capitalism properly. See Man U.