Both players were hurt in Cleveland's win on Sunday over Seattle. Coach Pat Shurmur said Massaquoi and Watson, who have a combined 38 receptions, both attended team meetings Tuesday and neither have yet been ruled out of this week's game in San Francisco.
Also, running back Peyton Hillis will practice after missing Sunday's game with a hamstring injury. Shurmur said Hillis is still the team's feature back.
Linebacker Scott Fujita is back "and full go" after sitting out last week's game with a concussion.