The last week or so has seen a shortlist established and a number of conversations have taken place with candidates both in this country and in the Southern Hemisphere.
Talking to the local media on Friday afternoon, Nottage was keen to emphasise that a lot of progress has been made and that the process is nearing a conclusion.
"There's been a lot of work going on and we are making some very good progress. We are now down to a much shorter list with, realistically, four options available to us.
"There are various possible structures, ranging from a Director of Rugby who doesn't do much hand on coaching but who works with a team of coaches to a DoR who does coach or possibly appointing a Head Coach.
"It all depends upon the individual, their level of experience and their skill set."
A host of names have been linked with Gloucester over the past few weeks and Nottage refused to be drawn. However, he did stress that Carl Hogg has been given an opportunity to speak with the board.
"It would be completely unprofessional of me to name names at this stage. We are handling the process carefully and doing things by the book.
"Carl (Hogg) has expressed an interest in the role of Head Coach. He has met with several members of the board and presented his thoughts and that will be taken into account when we come to make a decision."
With the first team squad reporting back for preseason training in the third week of June, a timely outcome is of the essence and Nottage is confident that an appointment will be made well in advance of that.
"We quoted a timescale of the end of the month. At this point in time, we are still on target for that date."