How there comes only 80% players?

My team at the moment 127,2%

The problem begun some time ago when there was on update about playing against opponent and gaining one free player. My last 5 oppurtunities of 3 players sets where I can choose players to strengthen my team and the all has been 80% rating.

My players are getting old and how I supposed keep up the space if there is only coming 80% players and you can get only 4 players per season. (if you are lucky and got some free time on Wednesdays.