Manchester United have looked nothing short of unstoppable so far this season.The Red Devils are unbeaten in all competitions and sit joint-top of the Premier League alongside local rivals Manchester City.On top of that, they are romping their Champions League group. After an opening day 3-0 win over Basel, Jose Mourinho's men then went to Russia and destroyed CSKA Moscow 4-0.Although Romelu Lukaku weighed in with a brace to take his tally to 10 goals in nine games since his £75 million move to Old Trafford, there's no denying the star of the show was Anthony Martial.The young Frenchman laid on both of Lukaku's goals with fine crosses into the box, scored a penalty and had the shot that Henrikh Mkhitaryan followed in to score the fourth.However, one thing the former Monaco man did in the first half had United legend Rio Ferdinand tweeting his delight.Take a look as Martial glides past five CSKA players like it's nothing:

Martial has spent plenty of time coming off the bencht his season, but former United midfielder Owen Hargreaves can see a difference in his play.

"He’s more direct, more positive," Hargreaves told BT Sport. "He’s got four in seven. That’s a great return. But he really is a diamond."

On the other hand, his manager Mourino believes Martial is a happier person overall and his upturn in form is linked to that.

“I see a great improvement in the person, in the mood, in the face, in the body language – if you want just a word, in the happiness,” said Mourinho of Martial. “He’s a happy guy, he’s working extremely well. He starts matches, he tries to do well.

“[If] he goes from the bench, even if it is for 10 minutes like in the last [league] match at home, he tries to enjoy and try to give something in these extra minutes. I am very pleased with his attitude overall and then it’s easier to play well.”