David Bates claims visiting sides "don't get the big calls at Ibrox" after an apparent foul wasn't given in the build up to Rangers ' goal on Saturday.
Aberdeen looked like leaving Govan with a well-earned point, but Kemar Roofe broke the deadlock with less than ten minutes to go as the hosts kept on Celtic's coat tails in the title race.
But Bates believes Calvin Bassey fouled Calvin Ramsay shortly before Roofe found the net, although urged the Dons not to dwell on the decision.
Jim Goodwin is still searching for his first win since taking over at Pittodrie, with the Reds no without a win in 11 matches.
Bates said said: “The gaffer has said that we have got a lot of hard work to do in the next week. Obviously he is going to get his ideas across. That can only be good for us. We will get on the same page and look forward to it.
"I thought we defended pretty well throughout. We tried to be organised at the back and keep it tighter. That was the gaffer’s first point when he came in and I think we did do that.
"Obviously it was disappointing to concede late on, but I thought we defended pretty well throughout. I was so disappointed coming in after that late goal. It was not a great goal to concede, either.
"The boys were saying there was a foul in the build-up. When the first cross came in there was a foul on Calvin Ramsay.
"I am sure it was a foul. I thought Bassey jumped into him. You don’t get the big calls at Ibrox so we just need to move on."
Aberdeen's next match is against Shaun Maloney's Hibs in just under a fortnight's time.
Bates said it has been difficult for Jim Goodwin, who has taken charge of four matches since his appointment, to get his ideas across in a short period of time.
He added: "It has been hard for the manager to get his ideas across in the short space of time he has been in. In the previous couple of games we had not kept the ball well enough. It had been a bit long ball.
"We spoke and we knew we had to start being braver on the ball and taking it from the goalkeeper. We know we are good at that and we are all players who play like that.
"Possession-based football, building up from the back, is better for us. It is not ideal kicking it long when you have got small wingers. It is tough that way, we are not built like that.
"The build-up was key on Saturday. We looked a lot better doing it."
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