The former Marseille striker is a new signing under Joe Kinnear but may miss the opening four games of the Premier League season through injury, Alan Pardew has revealed
The 26-year-old scored six times in his debut season in the Premier League with relegated side QPR last term, having initially joined for a club record £8m fee in January.
But now Remy, who has linked up with the Magpies on a season-long loan, will not be able to kick-start his return until mid-September due to a strain that sees him miss the opening four fixtures of Newcastle's campaign.
"Remy is still on the road to recovery," Pardew told The Chronicle, having already presented him to home fans during last Saturday's friendly draw with SC Braga.
"Manchester City will come too soon, and so might West Ham and Fulham. It is becoming increasingly likely he will be unavailable.
"He has not kicked a ball yet and only been running. It is very important that we make sure he is right.”
Newcastle start the league season with just Papiss Cisse and Shola Ameobi fit for selection up front and Remy may have to wait until an away trip to Aston Villa on September 14 before he can make his debut.