Fant (undisclosed) was placed on the reserve/COVID-19 list Tuesday, Field Yates of ESPN reports.
Fant has served as the Broncos' No. 1 tight end this season, recording 37 catches on 53 targets for 320 yards and three touchdowns in eight games. It's unclear if he tested positive for COVID-19 and whether or not he's vaccinated, two big factors in determining when he might be able to rejoin his teammates. If he takes a seat Sunday in Dallas, Fant will yield top TE duties to Albert Okwuegbunam, with Eric Saubert and Andrew Beck also factoring in.