Charles Leclerc warns of "massive change" at Imola after dominating F1 practice
![Charles Leclerc warns of](https://i2-prod.mirror.co.uk/incoming/article32839144.ece/ALTERNATES/s615/0_F1-Grand-Prix-of-Emilia-Romagna-Practice.jpg)
Charles Leclerc delighted the Tifosi by topping the time sheets in both Friday practice sessions, but he has warned that things might not remain the way they are for Ferrari