Oct 18 (Reuters) - Former BT Group CEO Philip Jansen, who now chairs marketing services group WPP, is in advanced talks with Heathrow's board and shareholders about taking on the role of chairman of the airport, Sky News reported on Saturday. If the discussions reach a successful conclusion, an announcement could come within weeks, the report said, citing sources. Reuters could not immediately verify the report. (Reporting by Rhea Rose Abraham in Bengaluru; Editing by Jan Harvey) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)