PARIS, June 8 (Reuters) - Michael Olise offered another glimpse of the influence he could have at the World Cup, netting a hat-trick as France edged Northern Ireland 3-1 in a warm-up game in Lille eight days before launching their campaign in the United States.
The in-form playmaker continued his rise as one of Les Bleus' key attacking weapons, but France's defensive concerns lingered four days after a 2-1 defeat by Ivory Coast with a much-changed side exposed frailties at the back.
France open their World Cup campaign against Senegal on June 16 in Group I before facing Iraq and Norway.
Didier Deschamps fielded what is expected to be his starting lineup for France's opener in New York, with Olise supporting Kylian Mbappe, Ousmane Dembele and Desire Doue in attack, while William Saliba partnered Dayot Upamecano in central defence.
Les Bleus made a sluggish start, initially struggling to break down a compact low block, creating few clear-cut chances before increasing the tempo and finding a breakthrough just before halftime.
Doue burst down the left flank and picked out Dembele in the box. The Paris St Germain forward's effort was deflected into the path of Olise, who tapped home to give France the lead two minutes before the interval.
Olise struck again four minutes after the restart, lashing a half-volley into the net after a poor clearance to double France's advantage.
Les Bleus, however, switched off defensively at times and, much like they had against Ivory Coast, were punished on the counterattack as Patrick Kelly met Shea Charles's cross with a fierce finish to pull a goal back.
But Olise was relentless.
The 24-year-old put the game beyond doubt in the 75th minute, curling a magnificent strike into the far corner.
(Reporting by Julien Pretot, editing by Pritha Sarkar)
