I'm actually very surprised Wenger hasn't been more prolific in the Japanese market for that same reasoning, we've finally got some Japanese kid, looks a tad small and young at the moment so not sure if we're doing the 3 years loan + passport from more "relaxed" Euro country in terms of passport rules, then comes here with EU passport.
The US market is getting bigger by the year though, and being that most of the teams play in just huge stadiums the money involved and fans watching can grow very easily/quickly compared to normal. National team doing better and better, quality of the league increasing dramatically, more and more big league teams doing tours there. Basically theres got to be a good wedge of cash for getting someone like Landon Donovan in, he was superb for Everton.
The top clubs should be grabbing guys like him, and a couple asian guys, lol for Arsenal lets be honest, you can't do much worse than Denilson/Diaby anyway so its not going to harm the team but could help in a big way. Utd target these markets heavily and make a shedload of cash.
As for Young, in the next few years he'll become the first name on the England teamsheet, has been one of the best few wingers in the league for 3-4 years, and considering Utd's more recent system, 4-3-3 with winger/strikers as opposed to out and out wingers Young suits that mould very well, he's also good defensively and never stops running. 25mil, his worth is based on how many people want him. Any of the top 6 would be lucky to get him, whenever Utd make a bid, at least 2 of the other teams will bid for him, maybe 4 other teams.