The AEK Athens midfielder has been a long-term target for the club and Marotta believes a deal for Katsouranis could soon be penned, if the two clubs can agree a fee.
''Sampdoria have been scouting the Greek market long before the national side won the European Championship,'' Marotta told skysports.com.
''But, of course, their performance at Euro 2004 increases the interest that other clubs have in their main players.
''We are still working on this possibility and if the conditions are right, we will seal the deal, otherwise not.
''The success of Greece at the European Championship must be a lesson for football clubs - you don't have to necessarily spend a lot of money to get great results.''
