He told manutd.com: "I am definitely aware the interest has increased since I have been at Old Trafford [laughs]. I'm so thankful to my Mexican fans, though - I have only nice things to say about them and I'm very grateful for their support.
"But even before I signed, Manchester United was huge, definitely one of the biggest clubs. And it's not only in South America. In the USA in pre-season, you could see how many people came to watch the team and look for autographs outside the hotel. I read something recently that said the club had something like 330 million fans in the world.
"That's amazing. I've also seen some footage from when United went to Asia in 2009. The love that people have for this club is spread all over the world and it's an honour to play here. If you say the words 'Manchester United' in any part of the world, people know who you're talking about."