Here's a short story:

(CNN) -- Jose Mourinho likes to keep them guessing. 

Three days after the Real Madrid manager hinted he was on his way back to England and Chelsea, the self-proclaimed "Special One" insisted his future was still undecided. 

Mourinho signed a contract extension until 2016 with Real Madrid last May after ending Barcelona's three-year stranglehold on La Liga, but his relationship with the Spanish press soured and he has clashed with Madrid and Spain's much-loved keeper, Iker Casillas. 

"When I decide on my future, my wife and kids will be the first to know, then the president and general director," Mourinho told reporters ahead of Real Madrid's game against Real Valladolid. "I haven't decided to leave. If I go, I will not give explanations." 

Despite Mourinho's pronouncement Friday, England's Sun newspaper claimed that he has already agreed to return to Chelsea but that an official announcement was unlikely until July 1. 

On Tuesday following Real Madrid's exit in the Champions League semifinals for a third straight season under Mourinho, this time to Borussia Dortmund, the 50-year-old, not for the first time, spoke of his deep fondness for England. 

"I know in England I am loved," Mourinho said. "I know. I know I am loved by the fans. I am loved by the media that treats me in a fair way, criticizing me when they have to, but giving me credit when I deserve it. I know I am loved by some clubs, especially one." 

Tottenham boss Andre Villas-Boas, who worked under his fellow Portuguese and formerly managed Chelsea, said Mourinho resurfacing in the Premier League would be "spectacular." With Mourinho at the helm, Chelsea ended a 50-year title drought and won back-to-back Premier League titles.  (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Who is the boss of Tottenham?
Guess: Andre Villas-Boas

Question: Who was he the former manager of?
Guess: Chelsea

Question: What does he think about Mourinho coming back?
Guess: it would would be "spectacular."

Now answer the following question in the same format.

Question: How long has it been since Chelsea has won a title?

50-years