#3 Chinese clubs

Another offer which could likely come to fruition. The Chinese Super League has seen a steady influx of top playing and managerial talent in recent years, following the massive investments to make the league more global.
The CSL currently boasts of players like Hulk, Oscar, Jackson Martinez, Odion Ighalo, as well as top-level managers like Giovanni Trapattoni (who is currently the highest paid manager in the world following Mou's sack), Andre Villas-Boas, etc who have all proven themselves on the European stage in the past.
Jose Mourinho has defended players' decisions to move to China for a huge payday in the past, stating that "The money is huge, "and the experience can also be very interesting."
Hence, it would not be too far-fetched to see him moving onto a lucrative role to be in charge of a CSL club, as only Chinese clubs could arguably match the huge financial remuneration he enjoyed at Manchester United.
The only snag to him getting moving to China would be his ego, as the 55-year-old is known to be a very proud man, extremely confident in his abilities, hence he would believe he still has a score to settle with his detractors (media and pundits) who consider him finished on the top level.
The only way to silence them would be by accepting another top-level job in Europe and performing well.