most likely scenario...
he had a full squad of 22 players
then he signed a bunch of players who are reserves
he then auctioned off his subs so that only 2 remain in the sub position
the reserves are still unsigned (some are signed since your squad has to have 14 players)
give it a few days and the players will be signed or released and he will be back to normal (or he could be raising funds and signing and selling free agents, so check the names to see if they change or stay the same)