Madrid will first appeal to FIFA and then to CAS (Court of Arbitration for Sport), during which the transfer ban will be suspended.
Looking at barca's timeline it took close to 9 months for their ban to be implemented after both appeals were ruled out.
If by opening day of the summer window (June 1st 2016) both appeals are not rejected then the transfer ban will be pushed fwd to JAN 2017 and JUNE 2017.
Morata to madrid this summer is more likely imo.