He will becomes a United player in July 1 and going to be Manutd first Mexican player but it still depends either he can get UK work permit. Report said that Manutd paid £10 million to bring him to Old Trafford from Chivas de Guadalajara.

Before signing with Manutd, he told his family that he was going on a trip to Atlanta in the United States but actually that the real destination was Old Trafford. Sir Alex Ferguson was eager that his move for Hernandez would not get hijacked by one of the big Spanish clubs and demanded that the surprise transfer be conducted with complete discretion.

Hernandez and his family were entertained at the Bayern Munich game before meeting Ferguson properly the following day.

Is he good?? I am not sure yet but his statistics was quite impressive for 21 years old Hernandez..

Date of birth: 1 June 1988
Club: Chivas de Guadalajara
2009/10: 28 games, 21 goals
International career: Mexico
4 games, 4 goals

Others info about him from manutd.com..

Where’s he from?
Hernandez currently plies his trade with Chivas de Guadalajara in Mexico’s Primera Division. Chivas are the most successful team in Mexican history with 11 titles. Having been at the club since the age of nine, Javier scored within five minutes of making his first-team debut, in a 4-0 win over Necaxa in 2006, and helped his side win the title that season.

What’s his record?
Pretty impressive. He’s scored 21 goals in 28 appearances for Chivas this term and has netted four times in as many games for Mexico. At 5ft 9in, he’s not the biggest striker in the world, but he’s quick and certainly knows his way to goal.

Where does his nickname come from?
Javier is commonly known in his homeland as ‘Chicharito’, meaning ‘little pea’, in reference to his green eyes. He received the moniker as he’s the son of Chivas legend Javier ‘Chicharo’ Hernandez, himself a top Mexican striker who played in the 1986 World Cup.

When can we see him in action for the Reds?
Not until he has received a work permit. If that is granted, Javier will join United officially on 1 July and could make his debut in a pre-season friendly against Chivas in Guadalajara.

This is what he said about joining Manchester United..

“I got goose-bumps when I realized I would be joining Manchester United,” he said. “These are the things you dream about. I longed for a move to Europe when I was a kid watching lots of football on tv.

“I’m just full of gratitude to everyone who helped me accomplish this. Suddenly I’m going to be playing with the players I know from PlayStation and television. I’m living in a dream. I thank God that I am living it.”