Serbia international Dusan Tadic spent four seasons at Southampton after leaving the Eredivisie. Ozan Kose/AFP/Getty ImagesAjax have announced the signing of Southampton's Dusan Tadic on a four-year contract for a fee of â¬11.4 million.
Tadic, with Serbia at the World Cup, joined Southampton from Twente in 2014 and will return to the Netherlands after four seasons.
The transfer fee for Tadic could increase to a maximum of â¬13m based on certain conditions.
To replace him, Southampton have lined up Basel's Mohamed Elyounoussi for a fee in the region of £16m, sources have told ESPN FC.
Elyounoussi, 23, scored 13 goals and provided 17 assists in 44 appearances for Basel last season, including a goal in the 2-1 win over Manchester City in the Champions League in March.
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