Good question!
My guess is that Kale/RR partnership will outsource a lot of parts from TEI. TEI has a lot of work in hand already. They will still carry on developing the indigenous engine. But now without time pressure. They have. TF6000 to develop, militarise TS-1400, serial production of TS-1400, Turboprop version and the production of T-700 engines. Hurjet CAS version engine with around 20-22000lbf needs to be produced in house as well.
TS-1400, TS-3000 for Heavy Classes, TF-6000 and beyond, Turbo-prop(s). Ukrainian engines have never been a settled matter for the defense industry, even before than war conditions emerge. They were rather a solution for the initial batches, as a stop-gap (Just like it is in Atak-II, Gezgin, Akıncı is going to be same too i believe).
TRMotor also could act as a ToT Office, assuming batches of files and know-how will be transferred to them, they could interpret those both in language skills and give a hot-start for the other projects.
I was one of the rare people who have kept defending how RR is the most preferable and feasible solution for the national turbofan engines at that class of the fighters. It was very obvious SSB & MSB will settle with them instead of Ukrainians + TRMotor or TEI alone.