Patrick Kluivert has been linked with the vacancy, while Derek Fazackerley has been in temporary charge since Pep Clotet was sacked at the end of January.
‘I spent time last week talking to an extremely strong shortlist and then met with our preferred final candidate over the weekend,’Thanakarnjanasuth told the Sky Bet League One club’s official website.
‘He has indicated that he wants to come here and I think that provided we can sort out the finer points of the contract then he would have a real ‘wow factor’ for the fans and send very strong signals out that we mean business and are serious about moving this club into a higher division.’
Former Ajax, Barcelona and Newcastle striker Kluivert, 41,has been out of work since leaving his post as director of football at Paris St Germain in the summer.
He was assistant to former Holland boss Louis van Gaal at the 2014 World Cup finals and has also had a spell in charge of Curacao.
Clotet was sacked on January 22 following back-to-back league defeats and Sol Campbell and Craig Bellamy have also been linked with the vacancy.
‘The only issue right now is the timing once again,’ Thanakarnjanasuth added. ‘Hopefully it will become clear after the appointment why it has taken so long because it is not an easy situation.’
Preston are reportedly weighing up whether or not to make a fourth offer for Peterborough United left-back Andrew Hughes.