Hi...
Take a look here to find out what is being held. Try the solution beside the green and white check mark first.
You may need to go into your "/etc/apt/sources.list" using a text editor and get rid of all the Debian entries that were just put in by...
Code:
deb
http://httpredir.debian.org/debian/ jessie main contrib non-free
and then run "apt-get update" again to refresh the sources list.
If you don't need to remove the Debian entries, after you get the error straightened out, you could try installing the Linux headers via Kali's package manager...
Code:
linux-headers-4.0.0-kali1-amd64
And then use the terminal to install the Broadcom firmware and driver...
Code:
apt-get install broadcom-sta-dkms
If that doesn't work, we'll have to see if another method does.
Regards...