UK Stocks-Factors to watch on May 14

May 14 (Reuters) - Britain's FTSE 100 index is seen opening 1 point down at 7723 on Monday, according to financial bookmakers. * IWG: British serviced office provider IWG has attracted takeover approaches from three rival suitors, potentially plunging the $3.1 billion company into a bidding war. * WPP: Former AOL chief executive Tim Armstrong is being considered to succeed Martin Sorrell as head of WPP Plc, FT reported. https://on.ft.com/2IueZk2 * RYANAIR: Laudamotion, t