Hypothesis: I think this is a bug where players who haven't signed a pre-contract can be registered, players who then sign a professional contract can be registered, but players who have provisionally agreed a contract cannot be registered.
If so, I'm surprised the bug hasn't shown up before.
Right, so I have a problem:
Got a lovely crop of young 4-5 star youngsters from youth development last season, and I want to add them to my squad this season to give them some 1st-team experience, and for cover.
Somehow though, these 4-5 players have the "INE" blacked out button when trying to...