According to a Brazilian reporter, former AC Milan striker Ronaldo has picked up another knee problem that could further delay his return to action.

The Brazilian ace snapped a tendon in his left knee while playing in a Serie A game with Livorno last February.

His contract with Milan expired last June and the "Fenomeno" has gone through a lengthy recovery process over the past few months in order to return to action.

He has been training with Flamengo, a popular team in Brazil, but reporter Renato Mauricio Prado, who works for newspaper O Globo, revealed during TV show Bem Amigos that the 32-year-old is suffering from a left knee lesion that is hindering his return to form.

According to the journalist, this is the reason why Ronaldo has yet to commit his future to any club.

However, Flamengo team doctor Luis Runco has denied that there are have been any new hitches in the rehabilitation process of the former Barcelona star.

Ronnie is currently in Rio de Janeiro and has been linked with several European clubs in recent weeks, including Paris Saint Germain and Manchester City.

Serie A minnow Siena has also put a sensational bid on the table, but it is highly unlikely that Ronaldo will land in Tuscany, as his agent stressed last month.

As it is the MLS offseason for all but four clubs left in the playoffs, U.S. teams could also be considering the possibility of bringing in Ronaldo.

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