Manchester United have agreed to let Fraizer Campbell, Ryan Shawcross and Lee Martin continue their education in the Championship until the end of the season.
Campbell has made a big impact at Hull since October, scoring six goals in 12 starts.
Tigers boss Phil Brown had been desperate to retain Campbell's services and Sir Alex Ferguson is happy for him to stay at the KC Stadium until the summer.
Defender Shawcross has been plying his trade for Stoke since August and has also impressed with six goals in 24 appearances.
He will remain with The Potters to aid their push for promotion to the Premier League.
Midfielder Martin, meanwhile, will stay with Plymouth to gain more first-team experience.
The 20-year-old has been a regular fixture of the Pilgrims side since moving there in October.
All three players had been due to return to Old Trafford in the New Year.