Guadalajara have confirmed they are in talks to sign Mexico international Nery Castillo to play in the Copa Sudamericana.
The 24-year-old is in the second half of a year-long loan at Manchester City from Shakhtar Donetsk, but has not played for City this season and does not figure in Mark Hughes' plans.
While the domestic transfer window is closed in Mexico, Guadalajara could sign Castillo to play in the continental Copa Sudamericana competition.
Guadalajara president Nestor de la Torre told the El Universal newspaper a deal could be done in the next 48 hours.
''Nothing is certain yet,'' he said. ''This evening, we could determine something either for the positive or the negative.''
Guadalajara face River Plate in Buenos Aires on Wednesday in the first leg of quarter-finals, but Castillo would not play until the second leg on November 6 should the deal go through.
The deal would represent a significant risk for Guadalajara, as Castillo would be unable to play another other games if they are knocked out by River at that stage.
The Mexican club had tried to sign Castillo in the summer.