And, manager Gary Megson will also decide whether to hit Johnson with a club fine after referee Uriah Rennie claimed that Johnson had used foul langauge against him - an allegation that the Baggies midfielder has denied.
"Uriah said he was called something," said Megson.
"If that's right then Andy really hasn't any defence. It's not right you call referees that if that's what he did.
"Andy said he didn't say the words but just said that Lee Hughes hadn't pushed over Radebe and he felt the referee took the easy option.
"But there are only two people who know for sure and I won't be one of them."