Crystal Palace co-chairman Steve Parish hopes to have a new manager installed by the weekend.
"We're getting closer," Parish told Sky Sports News. "It's quite fluid at the moment. It's gone on a lot longer than we thought.
"We're talking to lots of people, getting lots of references. We are quite close."
Parish declined to give any names of those being considered, but said there were three applicants on the shortlist.
"It's a difficult decision, and it is important we get it right," he added.
"We thought we would have somebody by Tuesday or Wednesday. That hasn't transpired, but hopefully by the weekend, so they have a good week to work with the players before the (Hull City) game.
"Once we get to the point of making an offer, a decision is made. We are not talking to anyone where finances are a problem.
"It would be nice to do it on Saturday. It depends on complications - where they are physically, location. We've made no secret... one or two people abroad. All will be revealed soon."
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