Aberdeen legend Willie Miller insists the Dons’ Hampden self-destruction is unacceptable.

The Pittodrie outfit were beaten 3-0 by Celtic on Sunday in a Scottish Cup semi-final that saw manager Derek McInnes and assistant Tony Docherty sent to the stands and players Dom Ball and Lewis Ferguson ordered off.

McInnes gestured to Celtic fans after being the target of sectarian abuse and apologised for his behaviour after the game.

Defender Ball received two bookings during the tie, Docherty was dismissed at the interval for confronting the officials, while Ferguson was red-carded for a reckless challenge on Tom Rogic.

HeraldScotland:

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However, former Dons defender Miller insists words need to be had behind the scenes over the lack of discipline on and off the pitch.

Miller said: “I think Derek McInnes deserves the support from the board but I don’t think that that’s acceptable, somebody needs to say to him.

“The behaviour in the second half, with your assistant being sent to the stand, you being sent to the stand. It does not matter how much you are goaded by the opposition fans, you can’t react to it.

“And your players as well, it was unacceptable how they lost their temperament.

“I think the fans will be saying the same thing as I’m saying.

“It was a very young side and and there’s injuries and excuses you can put up.

HeraldScotland:

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“But you can’t put excuses up for temperament, two players being sent off, a manager and assistant manager being sent to the stand as well. It’s not acceptable in my book.”