Ángel di María has not been ruled out of Sunday's World Cup Final for Argentina.
Di María is attempting to return from a thigh injury that caused him to miss the semifinal.
"Angel is at a stage of recovery and there cannot be a time frame put on it," his agent, Eugenio Lopez, told radio station FM Delta.
"He was subjected to treatment with stem cells to accelerate recovery.
"Angel wants to play, no matter what, and he will make every effort to get there.
"Whether Angel will play will depend on the decision taken by [coach Alejandro] Sabella."