The San Antonio Spurs want the Celtics to go all-in on the Kawhi Leonard sweepstakes — an offer of Jaylen Brown, Marcus Morris (for salary balancing), and next year’s Kings’ first-round pick (No. 1 protected only) could win the bidding.

Danny Ainge and the Celtics are not moving fast on this — nor should they be. Do nothing this summer and the Celtics are still probably the team to beat in the East next season (let’s see how free agency shakes out before getting to formal with rankings). Sources say that Boston is not eager to include Brown in any deal, and they are not doing anything without both fresh medical reports on Leonard’s quadriceps tendonitis, and talking to the man and his representatives. Which is wise.

Boston president Ainge also admitted it makes a deal getting done unlikely. Here is what he said, via Chris Forsberg of ESPN.

“If I feel like it’ll help our team — we explore every trade of players of certain magnitude or superstar, first-ballot Hall of Fame-type of players,” Ainge said Friday after the Celtics formally introduced first-round pick Robert Williams at the Auerbach Center. “We’re going to take a look and kick the tires and see if there’s something there. But that’s all. “I think those things are unlikely.”

Right now the Lakers and Sixers are the teams pushing hard to get a deal done, both feeling pressure because they believe that if they land Leonard, LeBron James will shortly follow.

The Lakers appear to be the frontrunner. Los Angeles is trying hard not to put all their best assets on the table — reportedly they have been slow to offer Brandon Ingram. It’s going to take him to get a deal done (I have been told the Spurs do not want Lonzo Ball), and probably Kyle Kuzma as well, plus a third team to absorb Luol Deng‘s contract (and that team will want a serious sweetener in the mix). For the Lakers, that is worth it if it lands Leonard and LeBron, but they are rightfully trying to extract the best deal they can. Los Angeles is also reported to be talking to Denver and other teams looking to unload a bad contract and would surrender a first-round pick the Lakers could give the Spurs as well, but taking on that contract would likely mean no Paul George (who, according to sources, is seriously considering a short contract to stay in OKC).

Philadelphia’s offer is reportedly Dario Saric, Robert Covington, and the Miami Heat unprotected 2021 pick. The Sixers ould include Markelle Fultz instead of Saric, if the Spurs wanted, and they have other picks and options to throw in the mix.

It’s in the Spurs hands right now, and they are going to be patient and wait for the best offer they can get. They can afford to wait on Boston, putting pressure on L.A. If the Lakers think they can get Leonard and not give up Ingram or other key assets, this could drag out. Complicating LeBron’s decision.

Still, things are trending the way Lakers fans want.