Description:Barcelona coach Tito Vilanova has suffered a relapse on the cancer in his saliva glands, Spanish daily El Pais reported on Wednesday (December 19) citing sources at the club. The 44-year-old Vilanova, who underwent surgery on a tumour in his glands in November last year, stepped up from his role as assistant to replace Pep Guardiola as first-team coach for this season.(1:11)