Southampton midfielder Dusan Tadic has agreed a move to Ajax.

Tadic is moving to Ajax for an initial 11.4 million euros (£10m).

The 29-year-old Serbia midfielder, who is in Russia for the World Cup, leaves Saints after four years.

He joined from FC Twente for £10.9m in the summer of 2014 and scored 23 goals in 162 appearances for the club.

Tadic, who signed a new four-year deal in 2016, will officially complete his move when the transfer window opens on 1 July.

The attacker has signed a four-year deal with the Eredivisie club and the fee could rise to £11.4m.