He had been available for no fee after his contract at St Mary’s ran out at the end of last season, and the defender has put pen to paper on a three-year deal.
The Blues face starting the campaign without Seamus Coleman at right back and will need cover even when the Irishman is back in the first team.
Martina, who played 36 times for Southampton after arriving at the club from FC Twente in 2015, cited Everton’s ambition as the main reason for signing.
Martina’s versatility attracted Koeman to the Curacao global, who made nine Premier League appearances for Southampton last season, as Everton attempt to balance European commitments with their efforts to break into the Premier League’s top six.
― Reuters picLONDON, July 18 ― Everton have continued their busy transfer window activity by signing Cuco Martina on a free transfer from Southampton, the club said yesterday.
Netherlands-born Martina, who captains Curacao at worldwide level, becomes the Toffees’ seventh summer signing, joining Wayne Rooney, Sandro Ramirez, Henry Onyekuru, Davy Klaassen, Jordan Pickford and Michael Keane at the Premier League club.
Cuco added: “I know the manager from my time at Southampton, so I know what he wants and he knows what I can do”.
“You can see this is a club that wants to achieve something”, said Martina, who has 30 caps for the Caribbean nation of Curacao. “We will play against Twente, one of my old clubs too, and I’m really looking forward to showing everyone what I can do”. With only Mason Holgate – a natural centre-back – and Jonjoe Kenny, 20, as the squads only players who could play at full-back.