Forest Green welcome Barnet, Lincoln travel to Wycombe, Coventry host Notts County on the opening day of Sky Bet League Two.
Sunderland and Aston Villa have been drawn away in the first round of the Carabao Cup, at Bury and Colchester respectively.
Chesterfield have signed FC Halifax midfielder Jordan Sinnott and Peterborough full-back Jerome Binnom-Williams.
Shrewsbury have signed midfielder Jon Nolan from Chesterfield.
Oxford have confirmed the signing of defender Charlie Raglan on a two-year deal.
Oldham have made Dan Gardner their first summer signing.
Chesterfield have signed striker Gozie Ugwu following his departure from Woking.
Chesterfield are to sign trio Scott Wiseman, Joe Anyon, Bradley Barry when their contracts expire at the end of June.
Ched Evans has rejoined Sheffield United from Chesterfield on a three-year contract.
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David Wheater has won the PFA Fans' League One Player of the Season award, ahead of Billy Sharp and Lee Gregory.
Under-21 sides from invited clubs - including some from the Premier League - will continue to compete in the Checkatrade Trophy for the next two seasons.
Chesterfield have announced they are to offer new contracts to club captain Ian Evatt and three other players.
Sky Bet League One champions Sheffield United beat relegated Chesterfield 3-2 to end the season on 100 points.
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Ched Evans has completed a medical at Sheffield United ahead of his proposed move from local rivals Chesterfield, according to Sky sources.
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Team news for Sunday's Sky Bet League One clash between Sheffield United and Chesterfield.