Vilanova is in the US as his treatment for cancer continues. He had a second lump removed from his parotid gland last month.
Despite being absent from training sessions, Vilanova continues to communicate his decisions to the club's coaching staff outside of Spain.
According to reports in the Spanish media, Vilanova apparently speaks to his assistant Jordi Roura at the end of every training session providing notes on training sessions.
Vilanova will have a ‘direct line’ to Roura during tonight's match at the Bernabeu.
He is set to return to Spain from his latest bout of cancer treatment later this week.