This is now possible by adding people to your squad and marking them as "Staff" in the drop down box.
These entries will have their one little area at the bottom of the squad page:
Visitors can click on staff members and they have their own page:
And you can associate news items with the staff members:
They will not appear in the player statistic pages. So if you do have a player-manager - please put him/her down as player and just write in the notes that they manage as well.
And yes, I support Newcastle United. The team without a manager, a chairman and an owner. All comments taking the mick will not be published!