Does anyone know when troy polamalu is expected to return for the rest of this season?

Does anybodyyy knoww whenn polomalu is gonna return? cus as all my fellow steelers fans know our next two games against the ravens and dolphins are very important and i think its easy to say we reallllyyy neeed polomalu for these next 2 games. Does anyone know when hes expected to return to the games? and one more question i asked this in another question 3 hours ago. But if Steelers Ravens and Broncos were to tie. Who would win the 2 wild cards?