Florian Wirtz was replaced in the Liverpool starting XI just before kick-off against Nottingham Forest.The German was named on the team sheet by Arne Slot at the City Ground on Sunday afternoon.Wirtz suffered a knock before kick-off against ForestGettyHowever, he suffered an injury during pre-match training and did not take to the pitch with his teammates.Curtis Jones was the man chosen to replace Wirtz, who missed out on a 30th start for Liverpool in all competitions.Third-choice goalkeeper Freddie Woodman was then added to the bench.It remains to be seen how long he will spend on the sidelines, but he was spotted sitting in the stands.Wirtz run hits obstacleWirtz started in all of Liverpool’s eight matches before their weekend trip to Forest.He scored three goals and assisted another during that run, which saw his improved form continue.Wirtz had to wait until December 27 to score his first goal for the club since his £116.5million move from Bayer Leverkusen.The 22-year-old is now on six for the season in all competitions, and also has eight assists.Liverpool were sat sixth in the Premier League before the fixture.A win over Forest would put them level on 45 points with Chelsea, who have a superior goal difference.Slot needed to make a last-minute change to his teamGettyWirtz made his way to the stands at the City GroundPremier League/.