Reference to an object with disabled copy constructor/assignment

In my application I have a list of objects. Since I must have only one instance I've disabled both copy constructor and assignment operator. Moving an object is still allowed. But since I perform various manipulations with the objects I need to store the pointer to one of them. Before I've used pointer for that purpose but I want to use a reference now.

For some reason I cannot reassign reference. The error:

error: overload resolution selected deleted operator '='
candidate function has been explicitly deleted

The sample code that demonstrates the issue:

#include <iostream>

class Item
{
public:
    Item() { n = (++Item::counter); }
    Item(const Item&& other) { n = std::move(other.n); }
    Item(const Item& other) = delete;
    Item& operator=(const Item& other) = delete;
    int Get() { return n; }
private:
    int n;
    static int counter;
};

int Item::counter = 0;

int main()
{
    Item i1;
    Item i2;

    Item *p = &i1;
    printf("%d\n", p->Get());

    p = &i2;
    printf("%d\n", p->Get());

    Item &r = i1;
    printf("%d\n", r.Get());

    r = i2; // here I get the error
    printf("%d\n", r.Get());

    return 0;
}

Ok, I can understand if I get error on something like this:

Item i3 = i2;

i.e. in case of really assignment. But here I just want to store a reference to the object, not to assign or copy it to another one.

So my question is how can I store a reference to an non-copied object avoiding pointers?