Muric joins NAC on a season-long loan, following City teammates Erik Palmer-Brown and Paolo Fernandes, who have joined in similar deals.
Smulders said, "Aro is a talented and physically strong keeper, who is ready despite his young age for a challenge at the highest level.
"He connects directly with the squad today and has to compete with our other goalkeepers for a place under the bar."
Muric also remarked: "It feels good to be able to play for Breda next season. I hope I can help the team and we have a good season together. I cannot wait to show people here what I can do."