Tranmere Rovers have made their fifth summer signing, adding former Oldham full-back Paul Black to their squad.
The 22-year-old came through the youth system at Boundary Park and played 70 first-team games for the Latics before being released in May.
"He's a player we've had our eye on for a while," Tranmere manager Ronnie Moore told the club website.
"There will be strong competition between him and Zoumana Bakayogo for the left-back spot."
Moore continued: "He's quick, likes to get forward and is good on the ball.
"He's still young but he's got plenty of experience and is a good addition to the squad."
Ben Burgess, Danny Harrison, Jean-Louis Akpa Akpro and James Wallace have already agreed moves to Prenton Park this summer.