Crystal Palace youngsters Sullay KaiKai and Hiram Boateng have agreed to extend their respective loan deals at Crawley Town until April 5.
Striker KaiKai and midfielder Boateng both moved to the Broadfield Stadium on month-long deals in February, but have only made three appearances between them.
However, Red Devils boss John Gregory is pleased with how the two 18-year-olds are managing their first experience of the Football League.
He told the club's official website: "Both Hiram and Sullay both now appreciate what it's all about. When they go back out next time they'll have a totally different picture about what it's all about.
"It's not like academy football, but when you've done something for two years in the same manner and suddenly you have to change it is a bit of a shock. But they will be fine and will be a little bit more prepared next time."
Boateng made his Palace debut in the FA Cup third-round win over West Bromwich Albion in January.
Joe Fish
