I used HSBC in Canada, the US and the UK. They were indeed helpful but I still had to produce evidence that I was in-country. Multi-currency accounts are only really for if you need to manage your finances across currencies on a regular basis.
Regulations re money laundering are a lot tighter these days. Sending any significant sum of money will require advanced form filling and no bank will take the risk of letting you simply open an account remotely and dump money into it. Well, not unless you're a Russian oligarch or dodgy shell company and the bank is hosted on a balmy Caribbean island, of course.
Realistically, he'll need to open a bank account when he arrives and then have the money wired there. There are other ways to trade forex, of course, but that would assume the chunk of money is significant.