Why? What are the advantages and disadvantages of such a deal? Where is the couple of billion dollars which you will require to sink into the design and manufacturing research going to come from? Please elaborate and then we can talk.
"Why?"
Because its cheaper and less risky to collaborate rather than work on one's own.
"Where is the couple of billion dollars..."
So one can ask where is the couple of billion dollars for project Azm going to come from? So should we then say that PAF is bluffing about building Azm? This is an illogical statement.
As of now it seems the consensus from senior posters is that it will be a twin engined aircraft designed in collaboration with Chengdu.
Turkey has chosen to pay BAe to basically develop their aircraft for them. This would not be suitable for both political and technical reasons for Pakistan. The Turkish project is a stab in the dark, high risk and likely to fail, depending near completely on British expertise. We all know how that works out for Muslim countries.
It is a folly, given present geopolitical realignments.
If Pakistan sends a high level delegation and explains all this to the Turkish, it is possible they will scrap the British route and join Pakistan in the Azm project. That would be most fruitful and effective for both Pakistan and for Turkey.
A turkish Radar / avionics / EW / AAM / HMDS development could easily be a win-win for both sides.
Turkey needs to ween itself away from Europe if it is to continue to hold the foreign policy independence it has done in the recent past.