Second Step: Re-think the distribution process...it is hard to convince the customer to buy two newspapers at a go. So,come up with a new way of distributing that does not compete with DN - E.g.,via subscription.
But having said that...and remembering that BD was probably started as strategic move to bar SA's Business Day....it might make sense to leave BD in the streets. It's a classic Ries&Trout Marketing Warfare tactic...if you are the market leader and someone tries to enter your region,you introduce products that compete with your existing ones...that way the newcomer will be forced tp fight it out with your new product leaving your key product virtually unharmed....
Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.