Midfielder Jon Nolan has joined Chesterfield on a free transfer following his departure from National League club Grimsby Town.
Nolan, 24, made 22 appearances for The Mariners as they secured promotion to the Football League.
He left Grimsby on Tuesday after appearing in the side's FA Trophy Final loss to Halifax Town at Wembley.
Chesterfield, who finished 18th in League One, released seven players at the end of the season.
Nolan, who began his career at Stockport County, is Chesterfield's second non-league signing of the summer after striker Kristian Dennis joined from Stockport County.
Find all the latest football transfers on our dedicated page.