NBA free agency begins this Friday July 1st at 12:00 Midnight. Teams and players are only allowed to negotiate deals, but players are not allowed to actually sign with a team until July 7th. A lot of assuming and mind changing can go on in six days, so as a fan, your best bet would be to actually wait until the players' name is signed on the dotted line before you allow yourself to get too excited (see DeAndre Jordan in 2015).
The defending champion Cleveland Cavaliers have seven free agents of their own this offseason, 5 unrestricted and 2 restricted. LeBron James and Richard Jefferson have pretty much stated that they will return. JR Smith just recently signed to Rich Paul's Klutch Sports Group. The last Cavalier player that was a free agent under them, Tristan Thompson, ended up getting exactly what he wanted and stayed in Cleveland. James Jones has a spot as long as he wants, which leaves Timofey Mozgov as the only unrestricted free agent that the Cavs will not try to re-sign.
Over the past year he has made it clear that he is trying to trade for a superstar. He was unable to make a move before last season's trade deadline and he was unable to make one on draft day last week. He's not going to give up, but he's going to have to sweeten the pot if he wants a team to give up one of their best players. GM's around the league have stated that since he's had so much success in getting over on the last couple of trades he's made, he's basically low balling every team he talks to. I believe if he's not able to pry Jimmy Butler out of Chicago, David Griffin will get a phone call pretty soon regarding Kevin Love. Despite Griffin's insistence that he's not willing to mess up the team's chemistry, he still would have to make a decision that makes sense.
We're only a couple of days away, so expect to hear every rumor imaginable. I must admit that for the first time in my life, I couldn't care less what happens on July 1st or any day after that. The Cleveland Cavaliers are World Champs, I'll worry about this stuff in February around the trade deadline.