Amadou has only trained once with the side since his arrival but Farke has not completely ruled out the midfielder from their tie with the Reds.
“To be honest, realistically Liverpool will be too soon for him. He just arrived, so he will need a bit of time,” Farke told the club website.
“At least when there’s an emergency, he could be involved. He is on a good level and trained with Sevilla at their training camp.
“Of course he needs to adapt a bit to the new faces and a new coach and club but it’s not a signing that is just available in nine weeks or something like this.
“He is an option but I feel that Liverpool is a bit too early. But if there’s an emergency call, he could be involved.”
Farke believes the addition of the defensive midfielder will provide a good option for his side in their quest to have a successful campaign on their return to the Premier League.
“He’s a good fit to our squad and a good addition pretty late in the transfer window,” he continued.
"We all got the feeling it was the right choice to do it right now and we are all pleased. He adds something special to our squad because he’s a physical player. He’s unbelievably quick, robust and he’s unbelievably strong.
“We have a pretty young and technical side and we felt that it’s good to have this quality, also as an option in our squad.
“He’s an experienced guy and versatile. He has played at the top level in France and played with a big club like Sevilla. It made sense to bring him in and we’re all delighted to have him.”
Amadou has played for French sides Nancy and Lille before teaming up with Sevilla in 2018.