OAKLAND — Festus Ezeli is unlikely to play in the Warriors’ first three preseason games next week. Shaun Livingston is doubtful to see any preseason action at all.

Two of the Warriors expected to give the bench a boost this season are out of action indefinitely, as Ezeli isn’t scheduled to have his shin reevaluated until next week and Livingston continues to recover from toe surgery.

That means opportunities to play for those looking for minutes at point guard and center at a time when coach Steve Kerr has yet to define roles.

Kerr said Saturday, with Livingston out, veteran Leandro Barbosa can play point guard and share responsibilities with Andre Iguodala. The coach has imagined sets with them on the floor together, as he considers Iguodala a point-forward who last season spent time bringing the ball up the court.

Point guard Nemanja Nedovic, the Warriors’ 2013 first-round draft pick who had an injury-plagued rookie season, has been one player Kerr has gone out of his way to praise.

“Honestly, I can’t wait for Shaun to get back because good competition at the point guard spot makes me work harder and makes me want to earn my minutes more,” Nedovic said. “Going against Steph (Curry) every day is really big for me, so I’m taking full advantage of it.”

The Warriors expect Ezeli to return to action this season, but while he’s out, Kerr said he is satisfied with Marreese Speights and Ognjen Kuzmic as the other centers on the roster.

“Speights looks good,” Kerr said. “I wasn’t here last year, but everybody says he was really heavy and not ready. He was in the Bay early this year and put in some work, and he’s had a good first few days of practice.”

The bench is expected to be deeper than it was last season when four Warriors starters averaged more than 30 minutes per game.

“I think it’s going to be vastly improved,” forward Draymond Green said. “We added some pieces. Guys have gotten better. So I think that’s going to be key. Especially getting Shaun healthy will be big. Getting Festus healthy is going to be big.”

The Warriors signed free-agent guard/forward Jason Kapono to a training camp deal. Kapono, 33, has played for six teams in nine seasons, but he hasn’t played in the NBA since 2011-2012, with the Los Angeles Lakers. He ranks fifth on the league’s all-time 3-point percentage list at 43.4 percent, averaging 6.7 points per game in his career. Kapono, whose signing had been delayed as he waited to receive his FIBA clearance, last played professionally in Greece in 2013.