This is a mega pack of player faces made by Cro-Manager community. This megapack contains precisely 24.006 players faces, in 140x180px dimensions and it works on any Football Manager skin.
Here it is some screenshots that I took in differents skins..
Check this tutorial if you don’t know how to install facepacks into Football Manager.
Extract to: My Documents/Sports Interactive/Football Manager 2015/skins/your-skin/graphics/pictures