http://soccernet.espn.go.com/news/story/_/id/1122809/juan-roman-riquelme-quits-boca-juniors?cc=5901

He says he has nothing left to give the club.

How unfortunate a player with the caliber of Riquelme couldn't say good bye to his beloved team winning the Copa Libertadores.

Perhaps he could return to Villarreal?. Some Spanish sources claim he could either go to China, return to Villarreal or join Tigre managed by former teammate Rodolfo Arrubarrena since Riquelme was born close to Tigre's stadium and is a sympathizer of the team.

I don't see Riquelme returning to Villarreal but that would be awesome. You know. Riquelme helping Villarreal return to the Primera. That would be an awesome farewell to a great player like him. I strongly believe Roman has still some football in his boots. He was capable of single handedly taken Boca Juniors to the Copa Libertadores final.