Valencia Plaza reports that Martinez is keen to bring in Guardado in a move to strengthen his attack.
Porto were close to signing the Mexican international during transfer deadline day.
Martinez signed the likes of James McCarthy, Romelu Lukaku and Gareth Barry near the end of the transfer window, but the Toffees are ready to bring in more players in January.
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The start of the 2017-18 Premier League season is just around the corner and is shaping up to be one of the most competitive yet.
As always it is the so called “big clubs” that have splashed the most cash in the transfer window so far this summer. Manchester United or City? Arsenal or Tottenham? Who are the winners and losers of the transfer window so far?