NBA free agency is set to begin on June 30. Teams will start spending and contract offers will be bigger than ever as the cap goes up. The NBA offseason is already underway with trade rumors and players opting in and out of their contracts.Another big piece of this NBA summer will be restricted free agents. Those are the players who can receive offers from other teams and their current team has the right to match the offer to retain the player. Teams must give them the initial offer sheet before free agency begins to be eligible to match.Austin Reaves of the LA Lakers and Cam Johnson of the Brooklyn Nets are two of the biggest names in restricted free agency.Carolina Basketball@UNC_BasketballCam Johnson Team USA #CarolinaFamily1394122Cam Johnson ➡️ Team USA 🇺🇸 #CarolinaFamily https://t.co/4vLSt0SIklThe Lakers already gave Reaves the qualifying offer so they have the right to match. He will be a huge target this offseason. He may have to take less money to return to LA.Dave McMenamin@mctenAs expected, the Lakers have made qualifying offers to Austin Reaves and Rui Hachimura, the team announced. Both players are now officially restricted free agents, giving LAL the right to match any outside offer to retain them2156295As expected, the Lakers have made qualifying offers to Austin Reaves and Rui Hachimura, the team announced. Both players are now officially restricted free agents, giving LAL the right to match any outside offer to retain themThe Lakers do not have the cap flexibility. A team with cap space like the Houston Rockets and San Antonio Spurs could offer Reaves a huge deal after his impressive playoff production.The Lakers also gave the qualifying offer to Rui Hachimura, making him a restricted free agent. Hachimura may be hard to retain as well, as his agents may demand $20 million per year.Johnson is a great two-way wing who played well for the Nets after being traded from the Phoenix Suns. He will get a big offer. The Nets will likely match it and bring him back. Brooklyn has some upcoming flexibility as a lot of its big contracts are expiring soon.Other notable restricted free agents this offseasonGrant Williams - Boston CelticsMiles Bridges - Charlotte HornetsP.J. Washington - Charlotte HornetsCoby White - Chicago BullsTy Jerome - Golden State WarriorsOmer Yurtseven - Miami HeatNickeil Alexander-Walker - Minnesota TimberwolvesPaul Reed - Philadelphia 76ersJock Landale - Phoenix SunsCam Reddish - Portland Trail BlazersMatisse Thybulle - Portland Trail BlazersRomeo Langford - San Antonio Spurs