Disagree. "Export license" in that sense is given to the companies by German government to allow the export of the aircraft, tech, munitions etc. Not an export license to Turkey. There's nothing to circumvent there, there's no Eurofighter without the work of German companies. No production line can work without work from other countries, no one member of the consortium can just say fuck it and build it themselves, they have to share.
I think we can expect final assembly and some production to be made here if people are speaking to Zentürk of all people so openly. Weapons integration is already given, that's the whole point of the Eurofighter, all members own it equally and can fix it to their needs. Weapons integration will take time, but it will happen. But on spares, Turkey will no doubt will want even parallel lines to be built here.
On subsystems being replaced by Turkish ones, I'm less optimistic, it's not a platform we know much about.
I mean it would also be contradicting the entire reason why the UK was aggresively pushing this deal, it wants their own production line to remain open and not suffer from technological or production attrition until the next 6th gen fighter jets comes to fruition. License production within Turkey is therefore highly unlikely.