Right now, Turkey is in the middle, it cannot openly get any sort of partnership / collaboration or equipment from China and Russia. (After S400s, I think Turkey has restrained itself, which btw Turkey purchased AFTER it was rejected equivalent systems from the west). and on the other hand its being treated as an outsider by the US / NATO. Greece is getting F-16 block 72s upgrades, it will get F-35 soon, it already has Rafales.
IMO, Turkey is in the stage where it should not fear US / NATO anymore. the most damage that US/NATO could do is already done by kicking Turkey out of F-35 program. Its US / NATO that needs Turkey to be at their side, They are using Turkish geo-strategic location every day of its existence. The strategic location of Turkey is the most important. Door step of Europe, Mediterranean / Black sea, critical trade routes, proximity to Israel / middle-east. Imagine if Russia / China fleet doing war exercises with Turkish navy in these areas. So, Turkey needs to understand its worth. It is not the Turkey that needs US & NATO. It is other way around. NATO cannot afford largest standing army at door step of Europe to join Russia / China camp.
And Turkey really don't need to officially join Russia / China camp. If NATO can kick turks out of critical weapon programs anytime then Turkey must not become dependent on US engines, who knows they pull the strings at the wrong time. The SU-57 / J-20 uses same thrust engines, AL-41, WS-10 kind of engines can be used if US put embargoes on their own engines. For Hurjet again there are several alternatives present. US engines are not the end of the world. Turkey needs to take decisions for its defense needs, for its national sovereignty. BTW, US already knows that if they put embargoes on engines, there are options where they don't want Turkey to go to. So, Turkey shouldn't really worry on pleasing the americans and take decisions whats best in its own interests. If there is no counter strategy for Rafales, F-16 block 72s then opting for Chinese fighter jet will only benefit Turkey for its own defence, for its own independence. NATO will not kick it out just because of that. Turkey has much more importance to NATO.
BTW, NATO wasn't even designed to counter China. There are many european countries who realize they have no enmity with China and keeping great relations with China are in their national interests. They are slowly and gradually getting away from US hegemonic policies.