Midfielder Ljungberg, surprisingly made captain for last week's 2-0 home defeat by Manchester City, did not travel with the team yesterday after damaging his ankle in training.
It means Dyer will make his first appearance for the Hammers.
Dyer signed for the East London side this week for a reported £7m deal and is on £70,000 a week.
Dyer signed for the East London side this week for a reported £7m deal and is on £70,000 a week.