This is a good move A330 Neo MRTT can be maintained by THY Technic and TEI, A400M can be maintained by TEI and airforce, and airforce facilities for A400M can even modify the plane.
"Offer from Airbus: Türkiye could become the first customer for the A330 Neo Tanker."
Taking into account what was said by the President it looks like there is a good possibility we will see a order for A330 Neo MRTT + A400M Transport (Taking over the cancelled order from Spain on a discount maybe?) sooner than later. The current MRTT is based on the A330-200.