@Khafee sir mean PAF is considering this deal as future backup plan, or waiting for funds arrangements to count itLast time, one issue with the Su-35 was the source codes. These are required to mate weapons of your choice to the a/c. The Russians denied this. Another inherent issue with Russian hardware is that they are maintenance intensive. Even the Chinese are now building much better h/w.
Nonetheless, this news from a credible news outlet, does give serious heartburn to those who were in denial, that PAF would go for a heavy twin. Although right now, PAF does not seem to be in the mood for it.