** U.S.-listed shares of Amaya Inc surge 17.65 pct to $16 in premarket trading; stock set to post biggest intraday pct gain since Feb. 1
** Canadian shares also up 16 pct
** Former Chief Executive David Baazov offers to buy the of the gambling website operator in a deal valued at about C$3.48 billion.
** The offer price of C$24 per share represents a premium of 30.9 percent to Amaya's Friday close of C$18.34
** Up to Friday's close, Amaya's U.S. stock had fallen about 13 pct in the last 12 months