Look at attributes and scout report, instead of the stars. As long as the stars state he'll atleast be a good player for you, stop looking at it and focus on the remaining things.The attributes for a position will give you an idea of what the player can do there. The scout report will tell you any weaknesses/negatives the player might have (inconsistent, not adaptable, dislikes important matches etc). I mean, they made it all detailed and nice this year, use it!
Focus also on stars when you're trying to get young players, as that'll give you an idea as to how much they can improve.
In essence, don't just look at any one thing, look at all the things/