Gilberry also confirmed the move on his Instagram account.
Though the move is not yet official, the Bengals opened a roster spot on Thursday by waiving Chris Lewis-Harris.
Gilberry was with the Bengals from 2012-15, but they showed little interest in re-signing him in the offseason, leading him to sign with Detroit. However, he played in only four games before an abdominal injury landed him on IR, and he was eventually released.
Gilberry has 31.5 sacks, but only 3.5 over the past three seasons. He started every game for the Bengals in 2014, but was moved to a situational pass-rusher rule in 2015. That's likely how he would be used upon his return.
The Bengals will likely look to make some changes with their defense after giving up a more than 500 yards against the Redskins. At the least, Gilberry could provide another option for a struggling pass rush that is tied for 17th with 16 sacks.
They potentially could get another piece back soon as well. Eventually, the Bengals will have to make a move regarding defensive lineman Brandon Thompson, who is on the physically unable to perform list after tearing his ACL at the end of last season.
The Bengals have until Week 11 to allow Thompson to begin practicing, and if he does return, they have a three-week window to activate him to the 53-man roster. Otherwise, he will stay on PUP for the remainder of the season.