Hughes, 23, joins the club on loan from Welsh Premier club The New Saints until January, subject to international clearance.
He has previously featured at the club, as well as a stint at Warrington Town.
Manager Neil Young said: "Adam is a player we tried to sign a number of months ago and we have kept in touch with TNS about the possibility of bringing him in on loan.
"He has a good knowledge of the club having played here previously and has experience, is aggressive, a good communicator and good in possession."
Passant, 19, has been training with the club throughout pre-season and has featured in most of the friendlies, including the club's recent 4-1 win over FC United of Manchester at the Marine Travel Arena.
Keep up-to-date with our exclusive email newsletters.
Subscribe