PREVIEW By North-west correspondent Alex Stevens
Jurgen Klopp will restore the big hitters as Liverpool aim to reach their first European final for nine years.
The big decisions for Klopp ahead of the second leg of the Europa League last-four clash against Villarreal are who should spearhead the attack and the identity of the central midfielders.
It is expected that Kolo Toure will once again partner Dejan Lovren at centre-back, given the continuing difficulties of Martin Skrtel.
Lucas was initially on the bench for the 3-1 defeat at Swansea on Sunday, which suggested the veteran was being saved for Villarreal, either as the midfield anchorman or in a centre-back position in which he has looked very comfortable during a number of matches this season, including the League Cup final defeat to Manchester City.
However, the return of Emre Can to training ahead of schedule has altered the equation for Liverpool.
The Germany international has been a mainstay of the central midfield since Klopp took the helm last October and, if he is deemed fit enough to play, could be fast-tracked back into the team.
James Milner is also a nailed-on starter for all the marquee matches, either in central midfield or in one of the three attacking midfielders behind the striker.
With Liverpool needing to score at least once to have a chance of progressing to the final, Daniel Sturridge – who scored in four consecutive Premier League matches before drawing a blank against Swansea – should surely lead the attack in the absence of Divock Origi.
Roberto Firmino was the spearhead in Spain but it did not work and Klopp must give Sturridge the chance that he has been denied in the last three European matches.
That would leave Firmino, Philippe Coutinho and Adam Lallana to start in attacking midfield and two of Can, Milner, Lucas and Joe Allen to play behind them.
Liverpool (possible): Mignolet; Clyne, Toure, Lovren, Moreno; Can, Milner; Lallana, Firmino, Coutinho; Sturridge.
In other Liverpool team news, the Merseysiders have been given a fitness update on another big-name attacker.