European clubs ranked by attendance: Top 40 highest average crowds in 2017/18

10. La Rochelle – 15,981 

9.Toulose – 16,084

8. Leinster – 16,579 

7. Clermont – 17,085

6. Wasps – 17,140

5. Toulon – 17,475

4. Bath Rugby – 18,527

3. Harlequins – 18,856

2. Bordeaux-Begles – 22,000

1. Leicester Tigers – 22,878