As he said, the piece is on the Janes homepage at the moment : Argentina interested in F-5s as a stop-gap fighter | IHS Jane's 360You can post links after 10 posts. Do you have a current source for the F5E claim? The only item I can find is a 2005 Key Publisling comment. I do not believe that the US would sell Argentina fast jets of any description because it is not in their interest to do so. The UK would strongly lobby against such a proposal with some success. Secondly how are the Argentines going to pay for the aircraft even if they were able to acquire them?
Not necessarily a silly choice given Brazil uses them, and has experience upgrading them to much more modern standards including targeting pods and BVR missiles.