Jarrett limped off at Portman Road during the 3-1 win over promotion rivals Ipswich Town.
He has a hamstring strain and may be forced to sit the Derby clash out. This could let in a number of players.
Jewell may opt for McCulloch, Mitchell, Kennedy or push Mahon into the centre. His straight replacement, Tony Dinning is on loan at Blackpool.
Team (from): Filan, Eaden, Baines, McMillan, Jackson, De Vos, Breckin, Mitchell, Bullard, Jarrett (doubtful - hamstring), Liddell, Teale, McCulloch, Mahon, Kennedy, J.Roberts, N.Roberts, Ellington.