Is it possible to somehow understand whether a Designer will come out of the future “designer”?

Question

Design

Greetings!
The place of action is the outback.
The team needed an illustrator designer, not freelance, but permanently for printing.
Since this is hard in the outback, ready-made candidates believe
that they are designers only because they know Corel at a basic level ... By the way, why is that?
We went over a dozen, decided that it would be easier to find someone who wants to develop further Korela with business cards.
And now, for the second, the trial period of three months is coming to an end, but it is clear that the person either does not want to develop, or cannot.
1. Constantly objective customer dissatisfaction (with a clearly defined idea, he went to the wrong steppe).
2. Primitive ideas and approaches, routine, copy-paste.
3. Not independent
4. Lack of curiosity indifference or procrastination, xs.
At the same time, there was an agreement that the timing is not so critical as a good result.
If you want courses - take it, if you want a tablet - get it, if you don't hit the color - it happens.
When given a test task - the result pleased.
In general, how to understand whether there will be a sense in the future (in half a year, a year)?
What to give a test task to a beginner?
Is three months too short?
How would you choose?
PS Yes, I understand that this is not an exact science, but at least somehow you can find out in advance?

Answer 1

if I were looking, I would choose from a thin school and teach Korela and not vice versa

Answer 2

If he loves his profession and wants to develop, then at least an average designer will leave him in a few months. If there is no motivation even when you give him all the cards in his hands, then he will hang like a load.