Chelsea paid £70million to prize Morata away from Real last summer, but the Spain worldwide hinted a return to Madrid is not out of the question.
Morata has not featured for the Blues since being sent-off against Norwich City in the Blues's FA Cup third round replay on 17 January.
Alvaro Morata has scored important goals for Chelsea, including the header in the 1-0 win against Manchester United.
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"I don't know [when he'll be back] because he has this problem and we tried a lot to find a solution to solve the pain in his back", Conte said.
You ask me how long he is out, maybe he needs one day, one month, or is out for the season, I don't know.
This incredible confession comes less than a day after Antonio Conte went on to say, "Players like Morata, for us, are very important and have been missing for a long period of time".
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They have conceded nine of their 24 league goals this season, or 38%, after the 75th minute of matches. The Spurs striker just scored his 100 goal for the club against Liverpool last weekend.
"Obviously I have to respect Chelsea, who made a huge effort to sign me and I'm very happy here".
"But Madrid will always be Madrid for me".
The absence of Morata coincides with Michy Batshuayi's move to Borussia Dortmund on loan, a decision that Conte downplayed.
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Morata has been out of action for the Premier League champions' last five games with a back injury and although he trained this week, he is not expected to make the matchday squad for Monday's clash with West Brom. "I am a bit anxious as we know the importance of the player". The Blues have a tough road lying ahead of them in the English top flight with a series of big games including the Champions League tie against Barcelona. "I'm not thinking for one moment about the possibility of going away from this club", he said. "You know very well the importance of the player", the coach added. I repeat: my commitment is totally for this club, like that of my players'.
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Page has personally invested in flying vehicle technology, although it is not clear whether Alphabet is working on it. Kalanick said this wasn't the first time he had heard this; it was something his high school football coach had said.