The 27-year-old has battled injury issues after suffering two ankle injuries in the 2023-24 season, which forced him out of action for almost seven months. De Jong recovered last month and has made seven appearances under new Barcelona coach Hansi Flick, racking up a total of 245 minutes.
With the midfielder seemingly returning to full fitness over the last month, Flick decided to hand De Jong his second consecutive start of the season against Real Sociedad in LaLiga on Sunday.
A challenge from a Sociedad player in the 25th minute, though, seemed to have troubled De Jong in the same ankle, but Koeman has made it clear that the former Ajax man has not picked up a serious injury.