Yossi Benayoun, though, is doubtful with the ankle problem sustained at Wigan.
Torres has not figured since the Champions League clash with Lyon on November 4 following a problem sustained on international duty.
There were injuries, including a painful ankle problem sustained playing against Sharapova, but nothing that threatened her career.
Their leading striker, Raúl Bobadilla, has travelled to Merseyside but is a major doubt with a thigh problem sustained during last Thursday's goalless first leg in Germany.
The central defender Eric Bailly also missed the win at the Mestalla with a groin problem sustained against Liverpool but has been declared fit for the second leg.
After being left out of the squad for the win over Spurs, Mario Balotelli missed out once again due to a back problem sustained in training on Friday.
Costa is also a major doubt with his own hip problem sustained against PSG; either Loïc Rémy or Bertrand Traoré is likely to start as the team's lone forward.
The Arsenal full-back picked up the injury during yesterday's 1-1 drawithth South Korea but it appears to be a recurrence of a ligament problem sustained on club duty earlier in the season.
He missed the first seven games of his tenure with a knee problem sustained in a training ground collision with Jordon Ibe plus the Europa League win over Bordeaux with a foot injury.
For the moment, though, the 25-year-old is said to be in peak condition but he has only just recovered from an ankle problem sustained during the summer and Allardyce has suggested Carroll needs to modify his game.
