As far as I'm aware only 4 came in on deadline day.
Myles Beerman has been described as a full-back, but when he played in a game for Rangers last season he played as a winger, he is 17.
Ursene Mouanda is a holding midfield player ( what Warburton would call a No 4), not tall enough to play centre back. Just been signed from a Boys Club, only contracted till January so basically on an extended trial, he is 18
Serge Atakayi is a winger/striker and is only 17.
Amin Abaradan is a striker and is 19. Intially listed as Amin Bouzaig, been in formed Bouzaig is his middle name.