Charlton have extended the loan deal of Arsenal midfielder Francis Coquelin until the end of December.
Manager Russell Slade has said Cardiff are looking at whether Juan Cala broke club discipline rules on social media.
Stoke have completed the signing of England international goalkeeper Jack Butland from Birmingham.
The npower Championship club accepted an undisclosed fee from the Potters for the 19-year-old, with the keeper set to stay at Birmingham on loan until the end of the season.
Butland had earlier rejected talks with Chelsea because of his desire to play regular first-team football and had also been linked with Liverpool, Fulham, Newcastle and Manchester City in this window.