Andrew Porter insists Ireland have the quality to take out France on their home patch in Saturday's Grand Slam eliminator.
But he warns that Andy Farrell's side must find their best form at the Stade de France if they are to topple the Six Nations title favourites after both teams won on the opening weekend.
After Ireland easily brushed aside Wales at the Aviva Stadium on Saturday, France played within themselves to beat championship also-rans Italy in Paris.
