Bayern Munich's Alphonso Davies is expected to miss six to eight weeks with a pair of ligament injuries after he limped off the pitch three minutes into the side's game against Eintracht Frankfurt on Saturday.
Davies, 19, appeared to roll his ankle while running without the ball and without being near any opposition players.
Following the match, Bayern boss Hansi Flick was able to put a timetable of six to eight weeks out for Davies.
"He sustained a ligament injury. One ligament is fully torn, another is partially torn. We reckon he'll be sidelined for six to eight weeks," Flick said. "It hurts when a player of this quality is ruled out."
Davies was replaced by Hernandez in the starting line-up for Bayern's 4-0 win against Atletico Madrid in the Champions League on Wednesday after coach Flick said that his form had "dropped" this season.
"Alphonso's form dropped a bit," Flick said. "But he gets all our support. We benefit from his pace, his energy. It's important he gets back on track."
"It's a bit normal to see a young player go through such a spell following an incredible season. We will support and help him."
He impressed during the 2019-29 season where he shone on the left-wing and helped Bayern achieve a historic Treble.
His performances also earned him a place the shortlist for Tuttosport's Golden Boy award, where Davies is one of the headline names alongside Borussia Dortmund duo Erling Haaland and Jadon Sancho, and Manchester United striker Mason Greenwood.