Not necessarily your 1/2 star players will play bad in new season... and not necessarily your new 3/4/5 star players will play good... My 5-star midfielder had average rating 7.35 in his first season, but in the second season his average rating was 6.50... My 1-star winger had average rating 7.67 2 seasons ago, he scored 15 goals in 18 games... You have to keep players who play consistently good, no matter how many stars they have... and sometimes to be patient with new 5-star players who play bad...