Matt Ingram has returned to QPR, while Joe Lumley has joined Blackpool on loan for the rest of the season.
Goalkeeper Ingram, 24, was on a season-long loan at Northampton Town, where he made 20 appearances.
Rangers were unwilling to give up an option enabling them to recall him at 24 hours’ notice this month.
Northampton’s former QPR manager Jimmy Floyd Hasselbaink therefore opted to sign Richard O’Donnell on a permanent deal from Rotherham, prompting Rangers to recall Ingram and loan out Lumley.
It means a fifth loan move for 22-year-old keeper Lumley, who impressed at Bristol Rovers last season and was previously at Stevenage, Morecambe and Accrington.