(Telecompaper) French cable operator Numericable's owners, Carlyle, Cinven and Patrick Drahi, are working on an all-cash bid for mobile and broadband operator SFR, reports BFM Business naming no sources. If the private equity groups succeed in their takeover, they plan to merge the two operators. Carlyle reportedly spoke of the plan to Vivendi chairman Jean-Rene Fourtou at a recent meeting but no offer has been made. Neither Vivendi nor Numericable would comment on the matter.