Last season's Jimmy Murphy Young Player of the Year has been a key attacking weapon for Erik ten Hag this term and was outstanding in the recent Emirates FA Cup win over West Ham United, scoring a superb goal to put the Reds in front late on.
After coming on as a substitute in Sunday's 0-0 draw with Southampton, he was hurt in a challenge by full-back Kyle Walker-Peters and eventually replaced by Fred in stoppage time.
After the player posted on Instagram to express his disappointment at missing our upcoming games ahead of the international break, and Argentina's two fixtures, the club has suggested that the ankle-ligament injury is still being assessed.