The Blue and Whites’ player will have the operation in Madrid, on the 2nd January 2018, on the tear to the anterior cruciate ligament in his right knee.
Juankar was due to have surgery on 21st December, but a viral infection forced the procedure to be postponed to a later date.
The operation is taking place on Tuesday 2nd January at Hospital Universitario Sanitas La Moraleja. Specialists, Carlos Martín and Alberto Gómez, along with traumatologist, Vicente de la Varga will be in charge of the operation.