"It is always more difficult to prepare for the match with injuries because you know that if they are fit we will use them, but in this case you never know," the Reds boss told the club's official site.
"It is better to avoid saying whether they can be available - it is difficult to say if they can play or not because they may have not played for 10 or 15 days. But they are both working hard with the physios and are improving, so there's still some time to decide.
"You never know, he (Gerrard) is still progressing. The key is the fitness of the player - it makes a massive difference if he has confidence. That is the main thing for him."