They are doing as much as they can to direct (force) players towards the auctions. I haven’t had a recommended player offer that is younger than 21 years old for a long time.
Recommended players are always slightly younger than starters at the same position... And the quality depends of opponent's players quality... If you have 25 years old 5-star DC and opponent has 7-star ST, you may get recommended a 24 years old 7-star DC...