Paraguay coach Gerardo Martino praise the progress that Colombia have made in recent years.

"Colombia have a very good group of players and they have also taken on a very good coaching staff. That makes me think things will go very well for Colombia," Martino told Reuters in an interview.

Radamel Falcao and Freddy Guarin shone in Porto's 5-1 rout of Villarreal in Thursday's first leg of their Europa League semi-final but there are more, very good young Colombian players in Europe and Latin America, he said.

Colombia, reunited with 1998 World Cup coach Hernan Dario Gomez, are in Group A with hosts Argentina, Bolivia and guest team Japan in the July 1-24 Copa America.