Liverpool boss Brendan Rodgers was unhappy with Danny Sturridge's training performance going into Saturday's derby.
Sturridge came off the bench to head home the final goal of the game in the 3-3 classic.
Quoted in the Daily Telegraph, Rodgers said: "I am looking at him in training on Friday and he is not right. Whose responsibility is that? It is the association, the player. All I can do is look and assess who will give me absolutely everything when they go out on the field.
"We have a game against a massive rival away from home. I need everyone as close to 100 per cent as I possibly can. He is clearly not. A lot of players, especially the top ones, are never 100 per cent fit.
"Suarez will never have been 100 per cent in his time here. Different personalities, different types.
"Daniel has been a match-winner for us throughout his time here but I didn't feel, because of that level of fitness, he was going to be that for us. I have seen it before. There is a trend.
"There are some games when he hasn't played well and that has happened on the back of not training. With any player, you have to put yourself on the training field. If you do that, you will be in with a chance of playing."
