Johansen said: “The supporters can say anything, but we will stay behind every player in this team.
“So, no-one can blame Efe. He is a fantastic player and he is a great person, as well.
“What happens in the dressing-room stays in the dressing-room – that’s how it is. But, of course, he was disappointed – it’s a ball he should have headed to Craig Gordon and he missed it. But that is what happens sometimes.
“Of course, it is disappointing. We felt we had control of the game before we gave away two goals.
“Efe had a bad header back and they have scored – that is what happens against quality players.”
The Norwegian has also insisted that there is not a mental problem with Celtic being able to hold a lead, particularly in Europe.
The Hoops threw away a 2-0 advantage over Malmo in the Champions League play-off at Celtic Park while domestically they have also lost leads in games against the likes of Kilmarnock and Aberdeen.
Johansen said: “I don’t think we struggled to be mentally strong. If you play for Celtic, from day one you have to be mentally strong.
“That’s a thing I have learned and I think a lot of the foreign players have, as well. They know what is expected at the club and what the fans expect.
“You need to win here. That’s what the fans expect and to do that you need to be strong mentally. I think we are.”
