Luton have signed former Peterborough and Brighton striker Craig Mackail-Smith on a two-year deal.
Norwich City have completed the signing of goalkeeper Jake Kean following his release from Blackburn Rovers.
Inverness have completed the signing of Northern Ireland Under-20 defender Danny Devine despite uncertainty over the future of Terry Butcher.
Devine, who recently had a loan spell at Wrexham, has signed until the end of the season after being released by Fleetwood.
Caley Thistle gave Butcher permission to speak to Barnsley 24 hours prior to Devine's capture.