The Los Angeles Lakers may, or may not, have considerable salary cap space to fill come the opening of the NBA free agency negotiating period on June 30, but one outcome is certain regardless of the team’s financial circumstances: the Lakers will be acquiring a rim-protector/lob threat to play alongside Luka Doncic.Free agency is the most likely path forward for most of what L.A. wants to do this offseason, though the Lakers could also look to t…