The former Sunderland midfielder has overseen a League Cup victory over Peterborough and a home defeat to Liverpool since taking over from Paolo Di Canio last Monday.
The Premier League's bottom club have been strongly linked with former Brighton boss Gus Poyet but chief executive Margaret Byrne insists the search will continue this week for Di Canio's successor.
Speaking in Sunday's match programme she said: "Clearly as a matter of priority, our efforts are presently focused on appointing a new head coach.
"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."
You can see how Ball figures in charge of his second home game at 1700 on Saturday, live on Sky Sports 1.