Tua was over rated from the start, now he's an old ex- over rated fighter with an iron chin. This fight will not happend, I am sure Arreola is looking for this fight more than David, he wants this fight bad. Tua is shot, and will never get a title shot again.
I think Tua has been too inactive lately and fighting weak journeymen for too long to be prepared for this fight. he should have taken a decent tuneup in Ukraine last july. I think he has little chances of beating Arreola, who is much better prepared and riding a far better moment.