Not one man - many, many, many men and women.
There are tens of thousand of naturalized Americans serving in the Armed Forces right now. Why shouldn't one of them be able to aspire to the Presidency some day?
To put it another way: why should Cindy Sheehan be eligible to be President, but not some Second Lieutenant originally from the Ukraine who wins the Silver Star for gallantry under fire?
And, of course, for any foreign-born person to be elected as President, they'd have to be a super-patriot anyways, in order to overcome suspicions about them.
For that matter why should I (foreign born, not yet naturalized, but someday hope to be) be prevented from runnng in, oh 2040 or so?
Our Fore-fathers wrote the provision against non-natural-born Americans becoming President for a very good reason.
George Soros has the money to mount a campaign and has been using his money to mount a campaign. If he could run, instead of having to back a proxy candidate, I don't think anyone conservative would mistake him for a "super patriot". But that doesn't mean Soros isn't electable.