Help Needed

Basically I am signing players for quite big transfer fees after scouting and being recommended by my scouts, players 4 star,3 and half stars with potential of 4 and above, once I've signed them and they have been with my team 1 or 2 months there ability and potential has dropped. I have the best coaches and scouts in the league and the players are getting regular football?
Any ideas or tips would be great.

Don’t take star ratings as definitive. They are just opinions of a player of how good they are compared to your team’s ambitions. If your team is playing at a higher level than previous (eg title chasing instead of mid table) the relative star ratings will be lower - eg Rashford might be 5 star for a mid table team but 2 star for a title chasing team). Lots of other factors also influence star ratings such as player form, reputation, etc.

Bottom line - if a player is performing well and the actual attributes aren’t decreasing too much i wouldn’t be concerned at all by star rating