Might be an idea to switch first 11 up...

You know.
If not for the mere fact that there's been a drop-off and gone stale in the attack (partly due to the lynchpin Jackson not getting enough touches on the ball in advantageous positions at present, which is frustrating), then at least for shot creating actions and accurate shot-volume purposes - https://pbs.twimg.com/media/GcPaDi4XYAAVTmD?format=jpg&name=large

The penny will eventually drop that Nkunku with all his ingenuity should be starting behind the striker (Jackson)...where he belongs, hopefully sooner rather than later.
10 minute sub appearances on average as the focal point up top thus far just doesn't cut it for a player of his calibre and establishment, regardless of his output in the cup competition.

Good time to introduce and enforce him into Premier League starting line-up for a run of matches post-international break, with the "easier games" on paper upcoming.
The recent predictable leaving report may or may not kick-start motion of Nkunku being put into the side.