A supporter ran onto the pitch following the Hoops´ late winner against the European champions in the Champions League and appeared to tap Dida on the shoulder as he ran across the six-yard box.
"I´m making no excuses for the behaviour, and the fan behaved disgracefully, but the contact made with the goalkeeper was minimal, absolutely minimal. The antics of the goalkeeper have to be taken into account as well," Quinn told BBC Radio Five Live.
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