Luton sign Northern Ireland winger Paddy McCourt and ex-Colchester United defender Magnus Okuonghae on two-year deals.
Doncaster's assistant manager Brian Horton has left the club after two years in the role.
Axed Leeds assistant boss Steve Thompson has been appointed first-team coach at Preston.
League One side Colchester United allow left-back Ben Gordon to leave the club to seek first-team football elsewhere.
Chesterfield defender Ian Evatt puts pen to paper on a new one-year contract with the League One club.
Colchester defender Ben Gordon has had his contract terminated by mutual consent.
Yeovil have signed Fulham defender Stephen Arthurworrey on a season-long loan.
League One side Bradford City sign midfielder Josh Morris on a three-year deal after he leaves Blackburn Rovers.