Klay Thompson. Image via: Soobum Im/ Getty ImagesKlay Thompson's time in Dallas is officially over. The Mavericks announced Friday that they've reached a buyout agreement with the four-time champion, clearing the way for a reported move to Miami, where the Heat have been circling for weeks, and now confirmed by insiders.Klay Thompson clears Dallas: Mavericks confirm buyout, Miami signing expected nextCategoryDetailsPlayerKlay ThompsonCurrent TeamDallas Mavericks (bought out, awaiting waivers clearance)Rumored TeamMiami HeatProduction (Mavs, 2 seasons)12.9 PPG, 40.3% FG, 38.7% 3PT across 141 games (80 starts)Player's StanceWants to "compete for a championship" and play a "deep playoff run" roleLatest Insider UpdateShams Charania (ESPN): expected to sign with Miami after clearing waiversTimelineBuyout confirmed Aug. 21; Miami signing pending waivers clearanceMavericks confirm the buyout, praising Klay's legacy on the way outThe Mavericks made it official in a team release Friday, with President of Basketball Operations Masai Ujiri saying Thompson is "one of the great players and competitors of his generation" and that the organization is "grateful for everything he brought to the Mavericks organization."It's a clean, respectful exit for a player who quietly put up real numbers in Dallas, he passed Damian Lillard for fourth on the NBA's all-time 3-point list back in January and now sits at 2,899 career threes, one of only five players ever to clear 2,800. He's also one of just two players in league history with 10-plus seasons of 200-plus made threes.This wasn't a sudden decision either. Dallas spent most of the summer resisting a buyout, publicly preferring to trade Thompson's expiring $17.5 million deal for real value. A second-round pick, a young piece, anything. But insiders had been signaling for days that the roster math simply didn't work: the Mavericks were carrying 16 standard contracts against a 15-man limit heading into the season, and something had to give.Why Miami has been circling Klay since before this was officialThe Heat's interest here isn't new, it's been the worst-kept secret in the league all offseason. Shams Charania has repeatedly named Thompson as Miami's "number one priority" for outside shooting to pair with Giannis Antetokounmpo and Bam Adebayo, and the front office reportedly held back roughly $6.5 million of its mid-level exception specifically to be ready for this exact moment.The comparison insiders keep reaching for is Ray Allen's 2012 arrival in Miami, a proven, decorated shooter accepting a smaller role late in his career to chase one more ring. If Klay lands there, that's the blueprint. He still has to formally clear waivers before signing anywhere, but with the buyout now real, Miami finally gets its shot at the guy they've wanted since the summer.