Reading pair Sean Morrison and Jordan Obita have both signed new contracts at the Madejski Stadium.
Ipswich defender Aaron Cresswell has signed a two-year extension to his contract.
Leicester have agreed to extend Neil Danns' loan spell at Bristol City until January 8.
The new deal sees the midfielder eligible to play in a further six matches for the Robins over the busy festive period, including trips to Millwall and former club Blackburn.
Danns moved to the npower Championship strugglers in November and has since made five appearances, scoring one goal in that time.
The 30-year-old has been with the Foxes since signing from Crystal Palace in the summer of 2011.