Riemer, on Monday, presented his squad for the upcoming World Cup qualifiers against Scotland and Greece, which did not include the 33-year-old Eriksen, who is still without a club.
Instead, Victor Jensen will get the chance to make his debut for the Danish senior national team.
The 25-year-old attacking midfielder has had a fantastic start to the season in Utrecht, scoring eight goals in eight matches - three in the Eredivisie and five in the Europa League qualifiers.
Gustav Isaksen is unavailable after being plagued by illness.
Denmark will host Scotland on Friday, 5 September, before they play Greece away three days later.
Denmark squad:
Kasper Schmeichel
Mads Hermansen
Filip Jorgensen
Jannik Vestergaard
Joachim Andersen
Andreas Christensen
Lucas Hogsberg
Rasmus Nissen Kristensen
Anton Gaaei
Patrick Dorgu
Joakim Maehle
Victor Froholdt
Pierre-Emile Hojbjerg
Morten Hjulmand
Matt O’Riley
Mikkel Damsgaard
Albert Groenbaek
Anders Dreyer
Victor Jensen
Andreas Skov Olsen
Mika Biereth
Rasmus Hojlund
Kasper Dolberg