Unless he's absolutely terrible he's getting around 30-40 games next season.
Chelsea have the club world cup, domestic cups, premier league and 8 game CL group stage
If Chelsea get knocked out at the earliest opportunity of every competition next season that's 52 games
If they get to the semi finals of all tournaments that's 67 matches
He could easily get 30 starts and not be seen as first choice
This season just gone
Nkunku - 42 apps
Madueke 41 apps
Sancho - 41 apps
Gusto - 41 apps
Aderabayo - 37 apps
Dewsbury Hall - 31 apps
Chalobah - 19 apps (recalled in January)
There are minutes there for players who aren't deemed guaranteed spots