Messi is recovering from a thigh injury.
â€śWeâ€™re very optimistic about his progress,â€ť said Martino.
"Itâ€™s unnecessary to take risks at the beginning of the season. Iâ€™m not worried about Messi because he looks very good to me. Heâ€™s prepared himself well during the holidays and has come back in great shape. The injury the other day was down to chance."
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