The QPR midfielder will play in La Liga this season as los Rojiblancos look to strengthen in the middle of the park and build on their ninth-placed finish last term
The Cameroon international joined the Hoops from Marseille at the start of last season as part of the deal that saw Joey Barton go in the opposite direction on loan.
The 27-year-old was part of the QPR side who finished bottom of the Premier League last term but has not featured in the Championship for Harry Redknapp this season.
QPR confirmed the move with a small statement on their official website on Monday evening.
Sevilla have taken one point from their opening two games of the new La Liga campaign, but enjoyed a 4-1 Europa League success over Slask Wroclaw on Thursday.