Nugent hurt his neck in a challenge with Blackpool defender Craig Cathcart during last weekend's goalless draw at Bloomfield Road and the 14-goal striker missed the 3-0 home win over Blackburn on Tuesday night.
Foxes assistant manager Craig Shakespeare described his chances of being involved on Saturday as "touch and go".
Leicester came through the game against Rovers without incurring any new problems.
Matty James has missed the last two games with a knee injury and the midfielder will be assessed before the squad travels to Suffolk.
The Foxes, back to winning ways after three npower Championship matches without a victory, won the reverse fixture against Ipswich at the King Power Stadium in November 6-0.