I usually buy a Scouted player per season. I had an MC FK specialist that scored 30 goals in his first season and gradually wound down until in 3rd season he couldn't get it up............and over

My non-scientific clutching-at-straws observation is that there is a three season itch. Other Scouted players tend to slump at end of 3rd season start of 4th. (See my theory is falling apart already).

Ofc there is also the fact that with slow SP gain eventually even MoM awards will not be enough to keep his performance on SA spefic abilities high.