Atletico Madrid President Enrique Cerezo confirmed negotiations with Catania for Alejandro Gomez.
The Argentine support striker and winger had already hinted he was ready to move on this summer, but a move to Inter fell through.
He could instead reunite with former Catania Coach Diego Pablo Simeone at the Vicente Calderon.
Atletico Madrid President Cerezo told Argentine station Radio La Red that there were talks with Catania for Gomez.
Itasportpress suggests a deal could be done over the next week.
The 25-year-old scored eight goals in 36 Serie A games this season, providing seven assists.