This is their roster currently....
RNH-McDavid-Hyman
Kane-Draisaitl-xxx
xxx-xxx-xxx
McLeod-Ryan-xxx
Ekholm-Bouchard
Nurse-xxx
Kulak-Ceci
Skinner
Pickard
Putting top 6 forward aside, lets do projected calculations with the guys we know are likely to sign
Janmark, Brown, Broberg and Holloway will fill 4 of those spots for, lets say, roughly $5m give or take a bit so that's 8m left for top 6 forward, 3C and extra forward and Dman. They can fill in the depth spots with prospects, 3C might have to be McLeod for a while. It can be done. If they sign Henrique then they might need to move Ceci to make room and maybe sign somebody cheaper for the bottom pairing.
It'll be tight for sure but there's ways of creating flexibility if they can't fit in the forward as is.