Villarreal's Riquelme training with Boca Juniors "by Friday"
Boca Juniors refuse to rule out fielding Juan Roman Riquelme in next month's Club World Championship.
"He could be playing with Boca in the Club World Championship in Japan.
"There is no doubt about his transfer.
"The only thing lacking is for Riquelme to fly to Buenos Aries on Thursday and sign his contract."