Chesterfield have raided Derby to sign James Meredith on an emergency loan.
The 18-year-old has agreed a one-month deal at Saltergate and goes straight into the squad for Tuesday's clash with Carlisle.
Spireites boss Roy McFarland moved for the Australian defender to provide cover for injured duo Alan O'Hare and Shane Nicholson.
"James goes straight into the squad for the trip to Carlisle United," said McFarland.
"He has been training with us and we like what we see.
"He is a natural left-footed player so brings crucial competition into the squad."