Cristiano Ronaldo broke down in tears after he was controversially sent off for Juventus in his debut game for the Italian giants in the Champions League.

 The forward was shown a straight red for an off-the-ball incident after half an hour of his side's game at Valencia.

 Ronaldo protested his innocence and his tears continued as he headed for the dressing room.

Unless an appeal is made and the red card is reversed, Ronaldo will at least miss the home game against Young Boys but could miss the double-header against Manchester United if he is banned for three games.

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