Ian Bennett, Steve Simonsen and Scott Shearer are three potential targets for Crewe boss Steve Davis.
Davis is currently searching for a goalkeeper to challenge Ben Garratt for the number one spot, and one who can also play a role off the field as a coach.
"The situation with the goalkeeper is ongoing," Davis told the club's official website. "We have nothing sorted yet and I don't envisage anything being sorted for at least another couple of weeks.
"I am in no particular rush on that because we want to get the right one in. We are continuing to have talks and will try to attract the right one here."