Ecuador forward Billy Arce joins Brighton on a four-year deal from CSD Independiente del Valle.
Having struggled for minutes at Getafe, Swansea City's Jefferson Montero will play the rest of the season with Emelec in Ecuador
Ecuadorian forward Jose Angulo will serve a four-year drugs ban after testing positive for cocaine during the 2016 Copa Libertadores.
Ecuador's football federation (EFA) president Luis Chiriboga and secretary Francisco Acosta were placed under house arrest on Saturday as part of the ongoing international probe into corruption at FIFA.
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