John Gregory will leave his position as Crawley Town manager with immediate effect due to health reasons
League One live updates
Sheffield United's match at home to Scunthorpe has been postponed because the cold weather has made access to Bramall Lane unsafe.
Referee Mark Heywood said he called the Sky Bet League One clash off "on health and safety grounds".
The Blades announced on Twitter that Heywood believed the pitch would have been playable, but the access in and around the ground was a cause for concern.
Leyton Orient have appointed their fourth manager of the season in the shape of Fabio Liverani.
The former Genoa coach has replaced Mauro Milanese - whose spell in charge came to an end on Monday after just 43 days - and has agreed a two-and-a-half year deal.
Ex-Italy and QPR defender Milanese, who took the job in October but won just two of his eight matches in the dug-out, has returned to his previous position as the club's sporting director.
Former Liverpool striker Lauri Dalla Valle has joined League One strugglers Crewe Alexandra on an 18-month deal.
BREAKING: #pvfc can confirm the signing of former Chelsea defender Aziz Deen-Conteh on a deal which runs to 2017. More details to come.