Even though Sanchez hurt his knee in last week’s 2-1 loss to Manchester United, he played through it and started the match against Everton.

However, Djordje Petrovic, making his debut for the Blues, replaced the Spaniard when he hobbled off the field in the final moments of Goodison Park’s 2-0 setback.

With 19 matches under his belt, Sanchez had played every minute of the season thus far, allowing 26 goals while netting five clean sheets.

However, the 26-year-old, who was signed from Brighton for £25 million in the summer, will now be sidelined for an extended period of time—a fact that even Pochettino finds concerning.

Chelsea will play Newcastle in Tuesday’s Carabao Cup quarterfinal, and the manager announced in his pre-match press conference that the player would be out for “a few weeks,” adding that he was unsure of the exact duration.

To figure out how to follow it, we shall evaluate each day. His knee’s reaction will determine how long it takes for him to recover, so it’s hard to estimate how soon he’ll be back, but we really hope he does.

In the worst-case situation, the goalkeeper may miss Preston’s FA Cup third-round match, as well as Premier League matches against Wolves, Crystal Palace, Luton, Fulham, and Liverpool.

Petrovic, a 24-year-old who made his full debut last Saturday and preserved a clean sheet against Sheffield United, will fill in for the time being.

Among the ten first-team players in the treatment room is Sanchez, adding to Chelsea’s ιnjury wоes this season.

Fortunately, Pochettino has stated that Christopher Nkunku, who has been out since preseason with a knee ιnjury, may finally be able to make his debut against Newcastle.

Argentine coach Jorge Sampaoli stated that £52 million summer acquisition Christoph will be participating, adding that he was in Saturday’s game.

He did a good job in training today. A few minutes into the game, he might be able to make an impact.