You know this is a nail in the coffin of that nice Kowser trainer. Its going to die a slow death now.
The Yak-130 serves as a transition to the SU-35 which does not have a two-seater aircraft to do so.
It should also be remembered that to buy the YAK-130 you have to pay (dollars, rubles or national currency) and they go entirely to a foreign country, therefore, the total number of these aircraft will only cover the needs to train the SU-35 pilots.
So there is a lot of room to continue the Yasin project, which could improve performance if turbofan engines with Patent made in Iran or made under license are available.
To standardize if a suitable Iranian turbofan is not available, the same engine as the YAK-130 would be optimal.
Finally, I think that the only reasons that the Iranian authorities close the Yasin project would be:
1) The Yasin project ultimately turns out to be a total failure so much so that it would prove dangerous in operational use.
2) the Yasin project is closed because Iran obtains the license to build the YAK-130 including the turbofan.
or
3) Having received directly from Russia a number considered sufficient of YAK-130, they aim to create a single-engine jet trainer for the transition from propeller-driven trainer aircraft to jet, for example, an aircraft in the category of the Chinese K-8.
For this third hypothesis, in Iran they could in any case follow the path taken by MIG which is in the design phase of a single-engine version starting from the MIG-AT trainer.
Since the Yasin has similarities with the MIG-AT, the Iranian designers could eventually use a large number of the design studies already done, machinery, accessories, components and structural elements to create a Yasin with reduced dimensions and single engine