Both players had come off the pitch by full-time at Pirelli Stadium as the Reds set up a meeting with Derby County in the third round with an impressive 5-0 result.
And the pair will need to be assessed carefully ahead of the team’s return to Premier League duty at White Hart Lane, Jürgen Klopp explained at his pre-match press conference.
The manager said: “There are a few players a little bit in doubt, of course. It’s not too serious.
“We had a game on Tuesday and the next game is in two days again, so we need to wait a little bit.