Hafiz Mammadov is already the owner of FC Baku in his homeland and French Ligue 1 side Lens.
With Watford's links to Udinese of Italy and Granada of Spain and Charlton Athletic one of a number of clubs controlled by Roland Duchatelet it appears to be a growing trend for multiple club ownership.
New Leeds United owner Massimo Cellino, however, is close to selling Serie A club Cagliari.
