I bought 2 scouts at the same time many seasons ago. A pair of AMR AML, both have PK special ability which I consider irrelevant.
I did not used packs on them.

AML was 28 when bought, scored 122 goals in 132 games.
AMR was 22 when bought, scored 87 goals in 136 games.


Aging players bad? I notice aging players perform better in average years ago, and many agreed with their own findings.
Scout is no different as it turn out.

Only problem of older player is the lack of resale value (or the difficulty to sell them), which makes them extremely expansive to use compared to younger players.
My AML is retiring at the end of this season at age 32, while the other at 26 is relatively easy to sell (although he is still 5* so no reason to sell yet)...