Phoenix Suns guard/forward Grayson Allen (concussion) is expected to return to the lineup on Tuesday versus Memphis. He's missed four games after landing in concussion protocol, but Allen worked at near-full capacity in Monday's practice and has been listed as probable on the injury report. Allen has been limited to a bench role this season, and his form has been somewhat inconsistent. The 29-year-old has averaged 10.4 points, 3.2 rebounds, and 1.8 assists in 23.9 minutes.