On the Football Manager subreddit, I've seen 10 teams enter Europe in many seasons. 11 teams in fact is possible
4 CL Places normally to the top 4
2 EL Places normally
1 ECL Place normally.
+1 CL Place for England finishing in the top 2 leagues.
+1 CL Place for the CL Winner finishing outside the top 5
+1 CL Place for the EL Winner finishing outside the European spots
+1 EL Place for the ECL winner finishing outside the European spots.
Examples of 10 teams (
1) (
2) (
3)
10 teams seems very common on FM but 11 teams is possible
https://theathletic.com/4866115/2023/09/19/premier-league-top-four-european-places-how/