The general rule is that any training provided overseas by an appropriately qualified instructor in the oversease country counts towards an FAA qualification, however (a big 'however'), only an FAA qualified person can provide a sign-off. An FAA qualified person is someone who holds an appropriate qualification issued under 14 CFR ie an FAA certificate holder *or* who holds a letter of authority to give the sign-off (LoA is also issued by the FAA under the permissions of 14 CFR).
So, unless the person meets one of the above categories it's unlikely the FAA will allow it.
Last edited by Tinstaafl; 23rd Jun 2014 at 16:29.