Not having Duff at Celtic Park is a huge blow- they are terrified of him and I´m sure the noise of the crowd would have changed once Duffer had a decent run at their defence up at Parkhead.
Having said that we can now play Dunn, Flitcroft, Tugay and Thompson which should give us control of midfield possession and begin to quieten the crowd.
The crunch will come in defence where we need Short to have one of his massive games and play Larsson out of it. More defending like we have at times in the Prem this season and Celtic will put three past us in no time.
However, whilst we are playing Arsenal at Highbury, Celtic are at East End Park against the team lying third in the SPL (yes, the might of Dunfermline Athletic). When Celtic this week-end strolled 4-1 past a Hearts side that would struggle in English div 1, we beat a team which (unlike Celtic) have qualified for the group stages of the Champions League 5-2; an equally large margin.
That difference in opposition class week in week out gives the Rovers a huge advantage. Just as players such as Curtis and Clement and half the Man City side look world beaters in Div 1 and are found wanting at Premiership level, so Celtic have a number of significant weaknesses which the SPL does not expose but a half-decent Prem outfit will relentlessly find.
I´m going for a 2-0 win for the Rovers at Parkhead and Souey out-psyching O´Neill.