Thompkins stuck on the team in 2013 after being signed as an undrafted free agent, impressing at times during his rookie campaign. He caught 32 passes for 466 yards and four touchdowns in eight starts last season.
The team was expecting him to make an improvement coming into his sophomore season, but has only caught six passes through four games. Thompkins did not play against the Vikings or Chiefs.
If Thompkins clears waivers, he could return to the team as soon as next week, reports Albert Breer of the NFL Network (via Twitter).