Tomlin confirmed JuJu also has a knee injury but did not say he if could play or not vs. Bengals. Obviously, Smith-Schuster will need to clear protocol this week before being activated. With Johnson also in protocol, the Steelers are potentially looking at Washington and Holton as their two starting WRs in Week 12.
Washington had a 3-52-0 line last week. It was a high for both yards and catches before getting hurt. Johnson will see a boost if Washington can't go and has already been a popular pickup. Holton possibly sees more time as well as a third option but there are a lot of questions in the offense due to the QB situation.