Louis van Gaal defended Marouane Fellaini after the United midfielder appeared to spit at Sergio Aguero during the Manchester derby.
In a typically heated clash between two of English football's most bitter rivals, Fellaini became irate with City striker Aguero in an incident towards the end of the first half.
Aguero tumbled to the floor after Fellaini kicked his standing leg and the hosts appealed for a penalty, which was not given.
Fellaini clearly did not feel it was a foul and he bent down to shout at the Argentinian as he lay face down on the floor.
Some spit appeared to exit the Belgian's mouth as he unleashed his tirade at the striker, but Van Gaal insists it was not intentional.
"The TV has shown that he is shouting and sometimes when you shout there's a little bit of saliva (that comes out) with it," the United boss said.
"I don't think that he's a spitting figure."
Manchester United youngster James Wilson has admitted boss Louis van Gaal influenced his decision to alter his shirt number.
The teenager made his debut for the club last season wearing No.47, but is now United's No.49.
Wilson, who came off the bench against Chelsea on Sunday, told MUTV: "As I’m a striker, the gaffer wanted me to have a nine in my number, and 49 was the closest."
Manchester United manager Louis van Gaal has slammed striker Robin van Persie for removing his shirt after scoring a dramatic late equaliser against Chelsea on Sunday.
The Dutch international scored deep into injury-time, subsequently celebrating by taking his shirt off, forcing referee Phil Dowd to caution him.
''He did a stupid reaction after the goal,'' Van Gaal said.
''You can be excited but you don't have to pull your shirt off because then you have a yellow card. It is not so smart.''
Manchester United boss Louis van Gaal has offered former Barcelona goalkeeper Victor Valdes the chance to train with his side.
Valdes, 32, now a free agent, is recovering from a long-term knee injury and will have his recovery supervised by the United medical staff before training with the first team, as he bids to regain full fitness.
The goalkeeper had been linked with a move to Man Utd's rivals Liverpool in recent weeks.
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Manchester United's much-maligned midfielder Marouane Fellaini had never scored for the club until last night's Premier League match at West Bromwich Albion. The Belgian came on as a sub and, with United trailing 1-0, equalised to leave whoever runs West Brom's Twitter feed with a red face. (The match finished 2-2.)
The club later apologised for the tweet.
Sorry if a joke about a footballer not having a shirt on under his tracksuit top has caused such outrage. It was not intended as a slur
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Cristiano Ronaldo's agent Jorge Mendes has put an end to the rumours that the Real Madrid forward could rejoin Manchester United.
It's been reported that the Old Trafford club were exploring the possibility of bringing back the man they sold to the Spanish giants for £80million in 2009.
However, Mendes told Spanish radio station Cadena COPE that Ronaldo will stay with Real Madrid 'forever'
"Cristiano is very happy at Real Madrid and has always been very happy. He’s going to break all the records with Real Madrid and he’s going to retire here," said Mendes.
"He has a lot of love for United because his heart was there for six years, but now he’s only thinking about Real Madrid and he’s going to stay here forever."
Last month a group of Man Utd fans flew a plane over a Real Madrid match with the message 'Come Home Ronaldo' clearly visible, it looks as though their wishes will not be granted.