Granada sporting director Juan Carlos Cordero has admitted that the Spanish club are becoming increasingly frustrated in their attempts to sign Queretaro forward Jhon Cordoba.
The 21-year-old spent last season on loan at Espanyol, scoring three league goals for the La Liga outfit.
"Queretaro are showing little seriousness, but we maintain negotiations in search of an agreement with them, because the player wants to join us and we want to sign him permanently," Cordero said in a statement.
"It's taken us a month-and-a-half to get Ruben Rochina, so it won't be for our lack of persistence, if we can get Cordoba. Hopefully there will be a happy outcome."
Cordoba has also scored six times in 17 games for Colombia Under-20s.