Aiden McGeady went down softly under pressure from Paul Hanlon
Tony Mowbray insisted referee Dougie McDonald was wrong to send off Aiden McGeady for an alleged dive in Celtic's 1-0 win over Hibernian.
McGeady's dismissal came just days after Arsenal's Eduardo was accused of diving against Celtic to win a penalty.
"If we hadn't had the week we've had in the media, I would suggest the referee would never have made it a sending off," said the Celtic manager.
"It's a lack of understanding from an official who is a very honest guy."
McGeady went down under pressure from Paul Hanlon in the 63rd minute of Celtic's narrow victory over Hibs at Easter Road in the Scottish Premier League.
Television footage appeared to show no contact from Hanlon and referee McDonald produced a second yellow card to send off the Celtic midfielder.
Even if he did take a dive, is it not just a case of saying 'let's get on with it'?
Hibs manager John Hughes
The Republic of Ireland international had already been booked for an earlier challenge on his former team-mate Derek Riordan, but Mowbray implied that McGeady just ran out of steam.
"We've all made a pact about not criticising officials, but for me it's a lack of understanding of the game," said Mowbray.
"I've been shown it in isolation. McGeady ran 40 or 50 yards before the incident and skipped past a couple of tackles - a third tackle has come in and he went down before he anticipates the challenge and gets a sending off.
"It was right in front of me. I saw it and I know exactly how it happened."
On Wednesday, Arsenal striker Eduardo allegedly dived to earn a penalty against Celtic in their Champions League qualifier at the Emirates Stadium.
Scottish FA chief executive Gordon Smith spoke out about diving in football and urged Uefa to charge the player.
Uefa announced that Eduardo would indeed be charged for 'deceiving the referee', which could result in a two-match ban for the Croatian international.
McGeady was sent off for a second yellow card offence
However, Mowbray's counterpart at Hibs, John Hughes, refused to criticise McGeady's actions and suggested that referees need to take a broader view of the game.
"People get booked for nothing," said Hughes.
"If we keep going the way we're going, we'll be playing with slippers on.
"It's a contact sport, and you need to get stuck in. Tackling is an art.
"Even if he did take a dive, is it not just a case of saying 'let's get on with it'?
"Where's the common sense? It spoils the game.
"You never want to see that, especially with a talent like Aiden McGeady.
"I'm the opposition manager, I want to see him doing his stuff and see if my boys can handle him."
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