Isabella is signing with the Bills, Aaron Wilson of KPRC 2 Houston reports.
The 2019 second-round pick is an undersized receiver with sub-4.4 speed, now on his third NFL team after spending three-plus seasons with the Cardinals and most of last year with the Ravens. Isabella will turn 27 midseason and will need to compete with a slew of young players for a spot at the bottom of the depth chart in Buffalo.