Crystal Palace have offered Patrick Kisnorbo the chance to earn a contract at Selhurst Park.
Kisnorbo is available on a free transfer after being released by Leicester City following four seasons at the Walkers Stadium.
He is currently training with Palace and manager Neil Warnock confirmed his interest in securing the Australian defender on a contract.
"Kisnorbo is training with us," Warnock told the Croydon Advertiser.
"We will have to act quickly if we want him because there are a couple of other clubs who are interested. He is a smashing lad."
Meanwhile, new Palace signing Darren Ambrose insists he should not be considered a replacement for Ben Watson, who left the club for Wigan Athletic in January.
Ambrose, whose dead-ball ability has been likened to Watson's, said: "Ben is a fantastic player, but I'm not here to replace anyone. I'm here to play my own game.
"As I say Ben is a quality player, he showed that with the move he got last season.
"But I'm just concentrating on myself and adding my qualities to the team."