Ederson has been sidelined for the same period as Dias with a leg injury that he sustained after the Manchester derby.
The Brazilian international has not featured in the last four games against Aston Villa, Everton, Leicester and West Ham.
Speaking prior to the Hammers fixture, Guardiola said that he is hoping to have Ederson back soon after he returned to training last week without suffering any setbacks.
Like Dias, it is unlikely that Ederson would be risked against Salford but he could be ready for selection in the near future.