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Ronald Koeman will relish the challenge of frustrating Arsenal manager Arsene Wenger once again, but admits his AZ Alkmaar side face a difficult task at the Emirates Stadium tomorrow night.

The Dutch coach has yet to lose a contest with the Gunners boss, after the Champions League Group H clash in Holland ended 1-1 following AZ’s dramatic stoppage-time equaliser.

Indeed the former Holland defender – the scorer of the goal which won Barcelona the 1992 European Cup at Wembley – masterminded a famous result when in charge of PSV Eindhoven on his last visit to north London during March 2007, where a late goal from Alex, who is now at Chelsea, saw the Gunners crash out 2-1 on aggregate.

However, Koeman accepts the challenge ahead tomorrow is completely different with AZ, who are struggling to recapture the form which saw them win the Eredivisie title last season.