NBA rumors: Al Horford expected to hold free agent meetings in Atlanta originally appeared on nbcsportsboston.com Boston Celtics forward Al Horford will be one of the top unrestricted free agents when NBA players can start agreeing to contracts Sunday night, and he should have no shortage of suitors. Reports over the last week have indicated the Dallas Mavericks, Los Angeles Lakers and Los Angeles Clippers are interested in signing Horford. Even the Philadelphia 76ers reportedly have interest, which makes sense given how well Horford played against Philly during his three seasons in Boston.