The 27 year-old has passed a medical at the DW Stadium this morning and has now put pen to paper on a two and a half year deal.
Latics manager Roberto Martinez said: “Jean is a player we have been tracking for a long time since he made a huge impression on us with his role for Chile in the World Cup.
“Now Jean has 18 months of experience in the British game and his dynamism, technical ability and tactical concepts will bring a different dimension into our squad.
“He is ready to bring his own experience and his energy into the fantastic challenge that as a football club we’re facing in the next 16 games of the season.”
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