article i read only said 4 games, didn't matter if it was split either, 2 in the beginning and 2 at the end.
also talked about the changes to transfers saying all a player has to do is tell the school he wants to transfer and they can't limit to where they transfer
https://collegefootballtalk.nbcsports.com/2018/06/13/ncaa-passes-significant-transfer-reforms-redshirt-rule/