Barcelona have confirmed forward Malcom has sustained ankle ligament damage and will miss at least one week of training.
The Brazilian joined Barca in a €41m deal this summer from Bordeaux in a controversial deal after Roma had previously announced a deal with the player.
The injury layoff comes at a convenient time for the Catalan giants due to the international break, meaning there is two weeks until they are next in action – away to Real Sociedad.
The 21-year-old has played just six minutes of competitive action this season and has so far been understudy to Ousmane Dembele.