Sabella admits there's growing concerns over Messi's long-term fitness.
"We've spoken and it's almost certainly a tear. We'll have to wait on his recovery. He's been ruled out," he said.
Sabella's biggest concern regarding Messi was the prospect of a repeat injury:
"I'm no specialist, but it's worrying when players get injured in the same place. We have to be optimistic and keep calm."
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