This has been one of the most tumultuous weeks in the club's chequered history.
Six months after leading Spurs to the UEFA Champions League final against all the odds, the affable Argentine was unceremoniously dumped amid worldwide consternation.
Pochettino was largely responsible for making Spurs an ultra-competitive side on the domestic and European fronts. His only fault is that he failed to bring any trophies to north London.
His dismissal was not exactly a major shock but when it did come it left many wondering if there is any appreciation or gratitude left in a game that is dominated more than ever by instant success.
Glorious failures do not count for anything any more in football, assuming they ever did.
And Spurs' legion of fans at home and abroad that have not seen any major silverware since winning the FA Cup in 1991 will have to come to terms with the fact that Mourinho - football's Mr Machiavelli - will do whatever it takes to boost the club's trophy cabinet.
Mourinho is one of the best managers going around and his services are constantly in demand.
The Portuguese made his name by turning the fortunes of clubs like Porto, Inter Milan and Chelsea that had not tasted a major honour like the Champions League or Premier League for many years.
He did this by enforcing his mantra of no-risk football based on strong defence at the cost of attacking enterprise although, to be fair, Chelsea under his charge were never as pragmatic as the Portuguese and Italian champions.
Winning ugly never kept Mourinho awake at night.
So what can we expect from Mourinho at his new stamping ground?
Will Mourinho change the character and playing style of a club that has always been synonymous with some of the finer and more appealing aspects of the beautiful game even when the team was struggling big time?
And if he did so, would the Spurs fans accept Mourinho as a messiah if he wins things or dismiss him as a pompous pretender if things go pear-shaped?
Former Spurs boss Harry Redknapp made a valid point when he said that fans would not care any less about a manager's history or reputation if he brought silverware to their club.
He is 100 per cent right, of course, and Spurs' fans should be no different.
Mourinho is to be commended for saying he would not tinker with the side's playing style and characteristics but coaches say that, don't they?
Many pundits would be prepared to reserve their judgment on Mourinho because only time will tell if he would do to Tottenham what he tried to do at Real Madrid and Manchester United and failed miserably ... change the club's DNA.
Spurs fans should fasten their seatbelts because they are in for a hell of a ride.
