Rio Ferdinand has warned Manchester United that another five-goal drubbing could be on the cards against Manchester City this weekend if they play as poorly as they did in Tuesday night's 2-2 draw away at Atalanta.Cristiano Ronaldo was on hand to rescue the Red Devils again in the Champions League, volleying home a sensational injury-time equaliser to snatch a late point out in Bergamo.Ole Gunnar Solskjaer's men were on the verge of slumping to their second group-stage defeat of the season, with Duvan Zapata's second-half strike looking like the difference after Ronaldo had cancelled out Josip Ilicic's early opener.Just like in their home outing against the same opposition, and their dramatic victory over Villarreal, the brilliance of.
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