Personally I think Pakistan will never rule out European or Russian options. Only thing which is resulting in for us not going for them is that Chinese are getting better in technology by every passing month. Soon they would be matching Europe and Russia both. In my humble opinion our way forward is getting J-10 C and latest version of J-16 from China. Produce more JF-17 than what was originally decided, and if we can get three squadrons of F-16 block 72 that would be on cherry on top.To be honest all of know us here that PAF wants the f16 (subsidized or used only) but may settle on j10 in addition to jf17.
Nothing else is available, nor is PAF interested in anything that it cant procure in numbers or will be able to operate efficiently .(thus ruling out russian and european options)