Declan Kidney's side opened their campaign in expansive fashion, scoring eight tries in their wins over France and Italy, but England's suffocating defence kept them to just one touchdown in their 14-13 victory at Croke Park.

Leg four of what could possibly be their first Grand Slam since 1948 takes the table-topping Irish to Murrayfield, a venue where they stuttered on their two most recent visits.

But Gaffney, a vital cog in the Kidney regime, is predicting a "freer" match on Saturday and more try-scoring opportunities for his side.

"Scotland will defend a lot differently to what England have done, what Italy have done and what the Welsh will do," he predicts.

"When I'm saying we'll be more expansive, we probably will be - but that doesn't mean necessarily you'll get the ball to the wing every time. There'll be a fair bit of ball in hand, I would say."

Former Ireland defence coach Graham Steadman is now working with Scotland, bidding to follow up their 26-6 win over Italy.

Ireland came up against one of their former defence coaches, Mike Ford, two weeks ago against England - and Gaffney is not fazed by another reunion.

"We've got to look after ourselves," he said. "Graham Steadman's a good defensive coach, there's no doubt about that.

"He knows a lot of the way Ireland have played over the years. If you go out to try and second-guess, it's exactly what we tried not to do against England - are they going to put (Joe) Worsley at 10 for certain plays, are they going to stand him there?

"You can't do that. We've got to look after ourselves and be able to adjust if they do that.

"We might touch upon it [Scotland's defence] from time to time. But we won't dwell on it. We can't dwell on it."