Chelsea face off with Salzburg on Tuesday at 5:45 pm UK time.
The Blues are currently top of their Champions League group with seven points from four matches.
Salzburg are second with six and Milan are third with four. So, if Chelsea win on Tuesday, they will secure top spot in their group.
However, it looks as though Chelsea will have to make do without a key man vs the Austrian outfit.
Kalidou Koulibaly was not part of the Chelsea training session on Monday ahead of their decisive Champions League group stage clash against RB Salzburg.
The west Londoners held an open training session ahead of the match in Austria, and Koulibaly was not part of the group.
Ahead of the United game, Potter explained the reason for Koulibaly’s absence, saying: “He just felt his knee at the back end of the game against Brentford. It’s not too bad, but it’s too soon for him to play in this game.
“We lost Koulibaly, so we can’t play him, and then we’ve got a couple of players returning who recovered against Brentford. Thiago couldn’t play in the week.
“So it’s a case of managing the load and managing the games and picking a team that can be competitive and hopefully win the game.”
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