"I’m delighted to be here. I’ve worked hard for years to play for a big club like Inter," Eder said in a statement on the club's website.

The 29-year-old made his Italy debut last year having arrived in the country in 2005 when he joined Empoli before spells at Frosinone, Brescia and Cesena.

Eder, who moved to Sampdoria in 2012, scored 12 goals in 19 league appearances for the Genoa-based team this season.

Inter are chasing a first Italian league title since 2010 but have slipped from first to fourth after winning just once in their last five games, leaving them six points behind leaders Napoli.