Potential Stars of the Libertadores Cup:
Club: Olimpia (Paraguay)
Age: 21 (22/04/90)
Strong and versatile, he enjoyed a fine second half of 2011, forming an excellent partnership with the more experienced Pablo Zeballos as Olimpia won a first league title since 2000.
Club: Vélez Sársfield (Argentina)
Age: 22 (15/03/89)
Stocky midfielder organiser who is leading the latest generation of products from Vélez youth academy. Can play in the holding role or higher up. Has a good all-round game.
Club: Universidad Católica (Chile)
Age: 21 (08/06/90)
Support striker or attacking midfielder with pace, strength, balance and a good left foot. Showed flashes with Unión Española in last year's Libertadores, before joining Católica, where he ended 2011 in fine form.
Club: Universidad de Chile (Chile)
Age: 21 (25/07/90)
A new signing from Universitario de Lima, he carries a goal threat and is growing in confidence. Can operate up front or on the right flank and will likely have the tough task of replacing Eduardo Vargas, now with Napoli.
Club: Atlético Nacional (Colombia)
Age: 27 (01/11/84)
Playmaker with vision to spot a pass and the technique to deliver it. He helped Nacional win the first of two titles in 2011, and returns after a spell with San Luis in Mexico.