New to Madden 17 is the addition of PRACTICE SQUAD

You must designate 10 players for your practice squad on Preseason week 4,
If you do not.... cpu will do this for you

During the season other teams may use 1 of their 2 Free Agent Signings on your Practice Squad Players!

So be Mindful!
Practice Squad Players are included in the Free Agent Signings so if you would rather sign 2 guys from someone elses Practice Squad... That is completely Fine.