Should Real Madrid fans be worried about Cristiano Ronaldo? According to a new report, the team is worried about the soccer player's long-term health.

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Goal.com reported on Monday that Ronaldo is scheduled to start tomorrow in the Uefa Super Cup against Sevilla, but are worried he will break down in the middle of the season like he did last year.

Irina Shayk's boyfriend has reportedly been stepping up his training program for the last couple of days to ensure that his body is ready. He also sat out of pre-season games such as the one in the United States in July.

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The website reported that Real Madrid coaches looked on in concern at the World Cup because Ronaldo was "looking well below his peak fitness and avoiding sprints as he appeared afraid of pushing his fragile frame to its limits." Ronaldo always wants to play despite probably having his 29-year-old body rest a little bit more. Ronaldo has been suffering from a knee condition called tendonosis and a long-suffering thigh problem.

"Cristiano always wants to play and it's that competitive streak that makes him the player he is, but he knows he will need to rest more to avoid a constant recurrence of this problem," a source close to Madrid told Goal.com. "The club are delighted to see him training at full pace as he has in previous years, but there is still some concern over how he will respond over the whole season."

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Cristiano Ronaldo, Irina Shayk