Celtic forward Daizen Maeda faces six weeks out after suffering a knee injury in the challenge that earned him a red card against Atletico Madrid.

Maeda was initially booked following a 50-50 with Mario Hermoso but the yellow card was upgraded to a red following a VAR review.

The Japan attacker had left a leg dangling and Hermoso went down in dramatic fashion after catching Maeda’s studs as he followed through.

Manager Brendan Rodgers said: “Daizen will probably be up to six weeks out with the injury from the challenge. He has strained his medial knee ligament which comes from when you just knock a player on the foot.

“If he was in stronger in the challenge he probably wouldn’t have had the injury. The clash of feet has just opened up the knee ligament.

“It’s a big shame for us because he has been brilliant for me since I came here.

“It’s a big loss because his attitude and mentality going into every game is superb. He initiates the pressure for us at the top end.

“It’s a real shame because he has been like a machine since he came to Celtic, watching him before I arrived and then coming here and seeing what he does every day and in the games, he is incredible. He hasn’t had too many knocks.

“But I always say, it’s an opportunity for someone else to come in and play.”

The injury blow compounded Rodgers’ frustration with the decision to send Maeda off in the 6-0 Champions League defeat.

“You only have to assess the incident. Everyone could see if you know football at all that there was no intention, he was just overstretching and both players clash feet,” he said.

“The irony is that as soon as the red card went up, their player miraculously got up off the floor.”