diff --git a/app/controllers/manager/dossiers_controller.rb b/app/controllers/manager/dossiers_controller.rb
index 5f64cb7e8..d947b6c9a 100644
--- a/app/controllers/manager/dossiers_controller.rb
+++ b/app/controllers/manager/dossiers_controller.rb
@@ -16,6 +16,21 @@ module Manager
       end
     end
 
+    def transfer_edit
+      @dossier = Dossier.find params[:id]
+    end
+
+    def transfer
+      transfer = DossierTransfer.create(email: params[:email], dossiers: [Dossier.find(params[:id])])
+      if transfer.persisted?
+        flash[:success] = "Une invitation de transfert a été envoyée à #{params[:email]}"
+      else
+        flash[:alert] = transfer.errors.full_messages.join("<br>")
+      end
+
+      redirect_to manager_dossier_path(params[:id])
+    end
+
     private
 
     def unfiltered_list?
diff --git a/app/views/manager/dossiers/show.html.erb b/app/views/manager/dossiers/show.html.erb
index 8d3f108b7..50aee6daf 100644
--- a/app/views/manager/dossiers/show.html.erb
+++ b/app/views/manager/dossiers/show.html.erb
@@ -26,6 +26,13 @@ as well as a link to its edit page.
       (Supprimé)
     <% end %>
   </h1>
+  <div>
+    <%= link_to(
+      "Transférer le dossier",
+      [:transfer_edit, namespace, page.resource],
+      class: "button",
+    ) if valid_action? :transfer_edit %>
+  </div>
 </header>
 
 <section class="main-content__body">
diff --git a/app/views/manager/dossiers/transfer_edit.html.erb b/app/views/manager/dossiers/transfer_edit.html.erb
new file mode 100644
index 000000000..bf2216774
--- /dev/null
+++ b/app/views/manager/dossiers/transfer_edit.html.erb
@@ -0,0 +1,46 @@
+<% content_for(:title) { "Transfert d'un dossier vers un autre utilisateur" } %>
+
+<header class="main-content__header" role="banner">
+  <h1 class="main-content__page-title">
+    <%= content_for(:title) %>
+  </h1>
+
+</header>
+
+<section class="main-content__body">
+  <dl>
+    <dt class="attribute-label" id="user">User</dt>
+
+    <dd class="attribute-data attribute-data--belongs-to">
+      <%= link_to @dossier.user.email, manager_user_path(@dossier.user) %>
+    </dd>
+
+    <dt class="attribute-label" id="text_summary">Text summary</dt>
+
+    <dd class="attribute-data attribute-data--string">
+        <%= @dossier.text_summary %>
+    </dd>
+
+    <dt class="attribute-label" id="state">State</dt>
+
+    <dd class="attribute-data attribute-data--enum">
+      <%= dossier_display_state(@dossier) %>
+    </dd>
+  </dl>
+</section>
+<section>
+  <%= form_for([namespace, DossierTransfer.new], method: :post, url: transfer_manager_dossier_path(@dossier), html: { class: "form" }) do |f| %>
+    <div class="field-unit field-unit--string field-unit--optional">
+      <div class="field-unit__label">
+        <label for="user_email">A qui souhaitez-vous transferer le dossier ?</label>
+      </div>
+      <div class="field-unit__field">
+        <input type="text" name="email"  required placeholder="chouette.gars@laposte.net">
+      </div>
+
+    </div>
+    <div class="form-actions">
+      <%= f.submit "Transférer le dossier" %>
+    </div>
+  <% end %>
+</section>
diff --git a/config/routes.rb b/config/routes.rb
index d244d5ade..2ab6b85a9 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -69,7 +69,10 @@ Rails.application.routes.draw do
       end
     end
 
-    resources :dossiers, only: [:show]
+    resources :dossiers, only: [:show] do
+      get 'transfer_edit', on: :member
+      post 'transfer', on: :member
+    end
 
     resources :bill_signatures, only: [:index]
 
diff --git a/spec/controllers/manager/dossiers_controller_spec.rb b/spec/controllers/manager/dossiers_controller_spec.rb
index 3bff00e01..54f103f62 100644
--- a/spec/controllers/manager/dossiers_controller_spec.rb
+++ b/spec/controllers/manager/dossiers_controller_spec.rb
@@ -34,4 +34,25 @@ describe Manager::DossiersController, type: :controller do
 
     it { expect(subject).to match(%r{Nom\s+\*\s+Texte court\s+🟢\s+rempli}) }
   end
+
+  describe "POST #transfer" do
+    before do
+      allow(DossierMailer).to receive(:notify_transfer).and_call_original
+      post :transfer, params: { id: @dossier.id, email: }
+    end
+
+    context 'with valid email' do
+      let(:email) { "chouette.gars@laposte.net" }
+
+      it { expect(flash[:success]).to eq("Une invitation de transfert a été envoyée à chouette.gars@laposte.net") }
+      it { expect(DossierMailer).to have_received(:notify_transfer) }
+    end
+
+    context 'with invalid email' do
+      let(:email) { "chouette" }
+
+      it { expect(flash[:alert]).to eq("L’adresse email est invalide") }
+      it { expect(DossierMailer).not_to have_received(:notify_transfer) }
+    end
+  end
 end