Lionel Messis injury is a muscular injury on his hamstring. The injury is related to an old scar from a previous injury that may open up again if he is forced to play, creating a much worse problem. The injury was initially reported to be less serious than it actually is, and Messi has missed several games for Inter Miami and the Argentine national team as a result. The latest update suggests that Messi could return to play against FC Cincinnati on Saturday, but his availability will depend on whether he feels fully fit and whether the medical team determines there is no risk of worsening the injury. The exact nature of the injury is not clear, and there are conflicting reports about whether it is a muscular injury or a hamstring tear.