As the only NBA team currently conducting a head coaching search, the are taking their time and casting a wide net, according to John Gambadoro of Arizona Sports 98.7 (Twitter link), who reports that the team has reached out to and interviewed roughly 15-to-20 candidates.

Duane Rankin of The Arizona Republic also hears from sources that the Suns have conducted more than 15 interviews and are making “great progress.”

Gambadoro says the second round of interviews will begin soon, but he doesn’t anticipate a final decision being made this week or next week. Phoenix is more likely to make a hire near the end of May or even during the first part of June.

Gambadoro’s latest report doesn’t mention any specific candidates, so it’s unclear who exactly the Suns have spoken to about the vacancy on their bench.

However, earlier reports indicated that the team was looking closely at assistant coaches from around the league, such as and of the Cavaliers, and of the Mavericks, and of the Rockets, and of the Thunder, among others.

As we noted on Tuesday within our preview of the Suns’ offseason, multiple reports have stated that the team is expected to prioritize a younger, first-time head coach after firing two veteran coaches with championship experience (Frank Vogel and Mike Budenholzer) in the past 12-plus months.

“Unbelievable basketball IQ,” new general manager Brian Gregory recently said, per Rankin, when asked what the team is looking for in a new coach. “Tremendous communicator. Shares our vision and what we understand needs to be done to be successful in basketball in this new NBA.”

Although Phoenix wasn’t the only team to enter the spring without a permanent head coach in place, multiple clubs have decided to retain their interim coaches, so it looks increasingly likely that the Suns will be the only team to conduct a full-fledged coaching search this offseason.