Despite Manchester City coming so close to signing him, Manchester United completed a deal to bring Alexis Sanchez to Old Trafford from Arsenal on Monday.

Arsenal received no transfer fee for the 29-year-old Chilean forward but Henrikh Mkhitaryan went in the other direction as part of an exciting swap-deal.

Portuguese coach Jose Mourinho waxed lyrical about Sanchez after he was announced as a Man United player.

“Alexis is one of the best attacking players in the world and he will complete our very young and talented group of attacking players,” Mourinho commented.

“He will bring his ambition, drive and personality – qualities that make a Manchester United player and a player that makes the team stronger and the supporters proud of their club dimension and prestige.”

There will be plenty of competition up front in Manchester - Martial and Rashford were already vying for one spot on the left flank of the attack.

Player analysis of Alexis Sanchez

The video shared on YouTube highlights eight key aspects of Sanchez's game, which are sure to improve Man United's fortunes.

He spent three-and-a-half years at the Emirates and there can't be many Premier League fans who would suggest that his arrival won't strengthen Mourinho's side.

Sanchez is expected to make his debut on Friday night, when the Red Devils visit Yeovil Town in the FA Cup fourth round.

According to various reports, Sanchez is now the highest earner in the Premier League but Arsenal manager Arsene Wenger resisted the temptation to criticise him.

"Of course the financial aspect is important but he could combine both (by moving to United)," said Wenger. "I think he’s going to a great club and he gets a great contract, so you can understand that a professional player can combine both aspects.

"I ask you what is the difference between a professional and a mercenary? I wouldn’t say he is a mercenary. For me it is not a problem the money you pay. What is important is what you do once you have signed someone.

"If I sign for Arsenal tomorrow for one pound then my responsibility is exactly the same if I sign for £100m. I will give my best once I signed. I don’t care what the others make."