Brooklyn Nets star Kevin Garnett has told LeBron James to focus on the Miami Heat after his recent comments on his decision to quit the Boston Celtics.

After Ray Allen left the Celtics last summer, both Garnett and Paul Pierce were publicly bitter about his decision to leave and join Miami and felt betrayed by his choice.

While Pierce reminded him that he had been dealt by the franchise this summer and didn't leave as a free agent, Garnett had a few more words for his rival.

"Tell LeBron to worry about Miami. It has nothing to do with Celtic business," he said, according to ESPN.

Garnett has previously told the media that he had lost his former teammate's number, while Pierce said that he still hadn't forgiven Allen.