Former Kidderminster Harriers defender Martin Riley has signed for Wrexham on a one-year contract.
The 25-year-old, who began his career at Wolves, spent last season at Mansfield Town.
After leaving Wolves in 2007 Riley spent a short spell at Shrewsbury before joining Kidderminster where he played 85 games.
Riley moved to Cheltenham in 2010 and started 29 games before joining Mansfield a year later.
The centre-back is Wrexham's second signing of the pre-season following the arrival of former Blackpool and Southampton striker Brett Ormerod.