Why? It is not a good ship?
An extra cruiser in Black sea is good for Russia
the hull itself is already 20 yo, it will also require whole new on board equipment and electronics, new weapons, because some are not produced anymore etc., the list goes on
in the end- we have 20yo ship, which is not very optimal, will cost a lot of money, will take space at shipyards, will cost a lot in maintanance