Houston, Philadelphia, Dallas, and Denver are interested in Covington, sources say. Dallas and Denver have minimal interest, which puts Houston and Philadelphia in pole position for one of the league’s most reputable 3-and-D wings. Covington isn’t moving as nimbly on defense as he has in past seasons following knee surgery last April, but he’s still a solid, reliable defender who could help a playoff team and shoot at an above-average clip from 3, which explains Houston’s interest.