Plymouth manager Peter Reid remains in talks with Tony Capaldi as he looks to win the chase for the former Cardiff defender.
Capaldi, who is a free agent after being released by the Bluebirds, went with the Pilgrims on their pre-season tour of Holland in a bid to earn a contract with one of his former employers.
Another club, believed to be Crystal Palace, are also interested in his services but Reid will continue to hold discussions with the 28-year-old.
He told the club's official website: "We are speaking to Capaldi at this moment in time. He has got interest from another club, so that's ongoing."
Fellow trialist Freddy Hall has been allowed to return home for more training.
Reid added: "Hall has done OK. He will be going back to Bermuda to finish off the season but there is a possibility we'll be getting him back towards the end of the year.
"He just needs a bit more coaching. He's done smashing to be fair but we're negotiating with the club to get him back.
"I don't think he's experienced enough to come in at this moment but he has got potential.
"I have got a couple of ongoing things and I will probably bring in another one or two keepers."