The trade deadline has come and gone, and the Warriors’ multi-team deal that was held up by a failed physical has been finalized, but the work isn’t quite finished yet for Bob Myers & Co.

Golden State has a 15th roster spot that could be filled for the final push in the season.

The Warriors improved their roster by reacquiring Gary Payton II and moving James Wiseman to the Detroit Pistons in a four-team deal.

It was a move that signaled Golden State’s commitment to making the most of the dwindling time they have left with their core of Stephen Curry, Klay Thompson and Draymond Green. The deal also benefited both parties involved.

Wiseman has a chance to develop outside the bright spotlight that comes with being defending champions. Meanwhile, Payton comes back to the Bay, a place he never really intended to leave in the first place, and should provide a needed jolt on defense when he’s healthy.

Those last three words are where the hangup is right now.

The Warriors traded for Payton with the hope that because he has familiarity with their system and personnel, he could make an immediate impact and help them climb the Western Conference ladder. But a physical revealed that he needs at least a month to rehab a core injury that may or may not stem from an offseason surgery to repair an abdominal muscle.

Adding a 15th player for insurance for the injury-plagued Warriors seems like the best call at this point.

The Warriors are 29-29 and on the fringe of making the playoffs at the All-Star break — far below the expectations that were set for this team heading into its title defense.

Golden State limped into the All-Star break and won’t be fully healthy out of it when the team opens the final 24-game stretch of the regular season on Feb. 23. Stephen Curry is out indefinitely with a leg injury that damaged some ligaments in his knee. He’s scheduled to be re-evaluated after the All-Star break, but is expected to miss games beyond it.

When everyone is healthy, Myers said he hopes the team has enough to make a playoff run, but he didn’t rule out the team exploring its options in the buyout market.

Coach Steve Kerr previously said he thinks the buyout market is “overblown.”

“Usually, it’s just hard to find someone who’s going to make a big impact,” he said.

The Warriors are once again facing a “big” problem on its current roster. With Wiseman out of the picture, Golden State doesn’t have a player taller than Kevon Looney, who is 6-foot-9. Could the Warriors use Kevin Love or Serge Ibaka to cushion their frontcourt depth? Either of those would have to be signed by March 1 for them to be playoff eligible.

Then again, the Warriors faced similar criticism regarding their lack of size last season and still went on to win a title.

Kerr is plenty comfortable with having a small-ball lineup. As of now, the Warriors can deploy Looney, Draymond Green, JaMychal Green and even Jonathan Kuminga in the five spot.

It seems like it’d make more sense for Golden State to pick between Ty Jerome and Anthony Lamb, both on two-way contracts, to fill the final roster spot. Lamb has been a regular in the rotation this season, while Jerome has filled in nicely lately with Curry out.

Lamb has seven games remaining on his two-way deal and Jerome has 14 left before the Warriors’ have to make a decision. Golden State has sat out Lamb for six of its last seven games to preserve his availability for the future.

“We’ll take a look at the names (of available players), look at how everybody might fit, look at our two-way players, see if that makes more sense to put one of them on the main roster,” Kerr said, “and we’ll just figure it out.”