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In page Marios Oikonomou:

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After a strong 2012–13 season with PAS Giannina, Oikonomou signed a contract with Cagliari, a team in Serie A, the top league in Italy. He was the first ever player in the history of PAS Giannina who managed to sign directly a contract with a foreign club.[1] His former club will receive an amount that will reach €500,000, while keeping a small percentage of resale.[citation needed] On 6 April 2014, he made his debut with the club in a home loss against Roma.