For sure he is a slow trainer (for his age).
My player got those skills while he is a (high) 5* player when yours is 2*
The lower the stars, the more must be the gaining.
So Molina should hit not less than 7 skills (avg) in every pack, to consider him as a fast trainer.
I would try to make him 39% quality (for negotiation list) and maybe if have some descent offer of 2-3 T to sell him.
* without spending extra greens for him.