AS says the striker's loan deal at Atletico Madrid is in danger of being terminated just six months into an 18-month agreement.
It was hoped Morata would return to his best form under Atletico coach Diego Simeone.
However, the 26-year-old has scored just six goals in 16 appearances.
And it has since transpired that Atletico will be forced to pay Chelsea £15million to keep Morata at the Wanda Metropolitano until 2020.
It's reckoned Simeone is assessing his options and weighing up a move for a more effective striker.
And that would see Morata return to Chelsea, with his future in even more doubt.