Barcelona coach Tito Vilanova, who underwent surgery on December 20 for a recurrence of a cancerous tumour, can envisage a return to work in \"15 to 20 days,\" club chairman Sandro Rosell said Friday. \"I think he will return to work in 15 to 20 days,\" Rosell said on the sidelines of the Dubai International Sports Conference. \"He will be obliged to have occasional check-ups but the doctor has assured (me) that will not preclude him from taking charge of the team,\" Rosell added. Vilanova, 44, left hospital on December 22, barely 48 hours after his surgery to remove a tumour from a salivary gland. He had similar surgery a year ago. He now faces some six weeks of radiotherapy and chemotherapy. Vilanova has led Barca to the best league start in their history - the Catalan club lead the table by nine points with 16 wins and a draw to date.