LAS VEGAS — Rich Paul, the agent for LeBron James and Anthony Davis, has always wanted a client on the Knicks because New York is the nation’s biggest market.

If forward Marcus Morris reneges on his verbal agreement with the Spurs for a two-year deal for $20 million, Paul will get his wish.

Paul, on the cover of Sports Illustrated last month, was at the Knicks’ Tarrytown facility the day before last month’s draft with a draft prospect, point guard Darius Garland, for a workout. He had hoped the Knicks would trade back in the draft to scoop up Garland, who went to the Cavaliers at No. 5.

According to a source, Paul tried to get New Orleans to trade Davis to the Knicks last month as hard as he tried to get him dealt to the Lakers.

Paul, according to the source, values the New York market and that’s why Davis could be in play in 2020 as a free agent if things don’t work out in Los Angeles.

The Pelicans didn’t think they could do a one-on-one trade with the Knicks and urged them to find a third team before the Knicks eventually lost interest and never even made New Orleans an offer, as The Post reported.

Suddenly, the Knicks could be in play for Morris when shooting guard Reggie Bullock’s physical came up with a red flag, halting the signing of a two-year, $21 million deal.

It’s known that Bullock has lingering plantar fasciitis — an ailment that eventually could lead to surgery. Agent David Bauman confirmed a new deal would be worked out, but declined to comment on Bullock’s health.

The Knicks pulling back on the Bullock offer has potentially opened the door for Morris.

The Knicks, according to an NBA source, thought Morris had an excellent season with Boston when he averaged 13.9 points and 6.1 rebounds and shot 37.4 percent from 3-point range.

Morris is a combo forward and could conceivably take minutes away from second-year man Kevin Knox, who shot 4-of-15 in the Knicks’ third summer league game Tuesday with four turnovers.

Some agents are furious at Morris for looking to pull out of an agreement, which could put next year’s July free agency into a precarious spot. It’s not as if Morris is looking to break an agreement so he can play for a winner. In fact, just the opposite.

San Antonio, which has one of the strongest winning cultures in the NBA, went to the length of trading away sharpshooter Davis Bertans to open up the cap space needed for Morris.

Meanwhile, the woebegone Knicks have not made the playoffs in six straight seasons and look to be on the outside looking in again in 2019-20 after failing to land superstars Kawhi Leonard, Kevin Durant and Kyrie Irving.

The Knicks have reportedly offered a one-year, $14.8 million deal to Morris.

“[Spurs coach] Gregg Popovich has to be blowing a gasket,’’ one NBA source said.