Former Manchester United defender Marcos Rojo spent three years virtually without playing due to injury and a lack of form, but is now back to his best for Boca Juniors
Former Arsenal and Chelsea attacker Willian is struggling to reproduce his best form at Corinthians and has been subjected to horrific threats from irate fans
Palmeiras midfielder Danilo has the chance to make history as his side go in search of a third successive Copa Libertadores title, and the likes of Arsenal will be monitoring the 20-year-old's progress closely