The team brought back the five-year veteran Thursday morning, just over 11 months after it waived him at the 53-man roster deadline just before the start of the 2014 season.
To make room for Fua, the team waived punter Karl Schmitz.
Fua was with the Broncos late in 2013 and throughout the following offseason after signing with them Nov. 27, 2013 to provide depth following an injury to then-starter Kevin Vickerson. He played in two December games that year, notching one tackle, and was inactive for six other games in a Broncos uniform, including three postseason games.