straight to your inbox every day for freeRio Ferdinand thinks Manchester United's goalless draw with Manchester City in December could be his former club's biggest regret of their Premier League season.United ended City 's 21-match winning streak on Sunday as they beat their rivals 2-0 at the Etihad Stadium.
The victory for Ole Gunnar Solskjaer 's side puts them within 11 points of Pep Guardiola 's team with 10 games remaining of the campaign.
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