Wigan have agreed the signing of midfielder Max Power from Tranmere.
Exeter have signed defender Troy Brown following his release by Cheltenham.
Exeter City sign centre-back Troy Brown after being released by recently-relegated Cheltenham Town.
Newly promoted Bromley will be Wrexham's first opponents of the National League season on Saturday, 8 August.
Tranmere Rovers start their first season outside the Football League in 95 years with a home game against Woking on Saturday, 8 August.
National League side Tranmere Rovers sign former Shrewsbury striker Andy Mangan on a one-year deal.
Forest Green Rovers defender Tom Bender signs a new six-month contract with the National League club.
National League side Torquay United sign defender Dan Butler following his release by Portsmouth.