MANCHESTER United's chances of making the English Premier League top four have been dealt a blow after a fiery goalless derby with Manchester City.
United had Belgian Marouane Fellaini sent off for headbutting Sergio Aguero in the 84th minute, moments after being booked for tripping the Argentine striker.
City came closest to scoring at the Etihad Stadium with Aguero hitting the post early on, while Gabriel Jesus had an injury-time header correctly disallowed for offside.
City lost goalkeeper Claudio Bravo to a calf injury in the 79th minute, with manager Pep Guardiola later conceding the Chilean's season could be over.
After the match, United manager Jose Mourinho suggested Aguero made the most of the clash with Fellaini.
"I didn't watch the Fellaini incident on TV but I spoke with Fellaini," he told Sky Sports.
"He thinks it was a red card because he is Fellaini. I spoke to (referee) Martin (Atkinson) - he thinks it was a red card.
"I can guess it's a bit of a red card and a bit of a very smart, very experienced Argentinian player."
The result leaves City in fourth place, a point above its city rivals and a point below third-placed Liverpool but with a game in hand.
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