Celtic could reportedly move for Villarreal winger Jefferson Montero before the start of next season.
It is understood that Mexican outfit Monarcas Morelia have agreed a £2m fee for the 22-year-old, although Celtic could reportedly swoop at the final moment.
The player himself is keen to remain in Europe, according to the Daily Mail, therefore placing Celtic in a strong position.
Montero has 19 Ecuadorian caps to his name.