Yamama are buying at the bottom here so at this price they are okay with the Argentina risk. The offer is mostly cash so it would be worth it to sit and wait for another offer now. Based on the Argentinian uncertainly there may not many others interested but maybe some companies already operating there with 'trapped' cash with the new currency rules may be interested.
Honestly this offer feels much like the Aurelian Resources deal. I will be getting a small win here but am disappointed as with more time the company could be valued multiples higher. Those that bought in to the $7.25 PP must be outraged now.