Vilanova continues to receive treatment for cancer in New York, but is expected to return at the end of March.
Former Spain goalkeeper Zubizarreta insists the Barca top job is waiting for Vilanova when he is ready.
“Vilanova will coach the club next year. Our best victory would be for him to return," said Zubizarreta.
“I have not spoken to Tito since the Milan game ended. There are days that are to be enjoyed from within. Tito deserves this and has more important things than the comeback to consider.
“In medical terms, it seems brave to give a fixed date for his return. Anyone who has been in such a situation will know that it is reliant on what you say from one day to another. We will be discreet in that sense. We have to be more cautious.
“Later this month we hope that he will be here, with everything taken into consideration. When Tito is back, he will decide the agenda again. If he wants the first day to be in the morning, noon or at night, that will be so. He commands.
“His current health? Tito is fine. He is looking good, in weight. Mood. Everything. He is in great condition, but we know that such treatments are wearing. Being connected to football he also has that vitality."