Sunderland chief executive Margaret Byrne says the club will not be careless in their appointment of their new manager.
The Black Cats are on the search for a man to replace Paolo Di Canio, who was sacked last weekend, with Kevin Ball currently in charge in an interim role.
Byrne wrote in the matchday programme on Sunday that Sunderland were still focusing on finding a new boss but would remain patient on doing so.
"Clearly as a matter of priority, our efforts are presently focused on appointing a new head coach," Byrne wrote.
"As you would expect with a position of this magnitude, there has been a lot of interest. However, there is no definitive timescale on an appointment as we are carefully examining all of the options available to us.
"I am sure that you have read and heard all kinds of rumours and speculation about potential targets, but much of this is guesswork.
"We have had contact with some interested parties already and have others to speak to in the coming days.
"As soon as we have identified the right person to take the club forward, we will make an announcement."