I agree, this verse is speaking to something other than what the "out there" faith healers refer to when they tell folks to muster up enough faith and they will be healed.
Since it's not referring to that, as I see it anyway, then I'm wondering just what is meant by saying he had faith to be healed.
In many cases we simply read of folks in the NT being healed after they were spoken to, but in this case it says Paul "perceived" this particular man had faith to be healed. Which leads me to wonder how Paul perceived this, and I suppose also points back to the original question of just what that means, the man having faith to be healed.
While the direct application of the verse may not pertain to us, I do wonder what others think the principle (or something else) for us today is.