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Left-back is an incredibly hard slot to fill, but should a premier player at the position appear on the market, Brendan Rodgers simply has to act.
Liverpool join a drove of clubs searching for the rarest of breeds—the left-footed full-back who can attack and defend in equal measures.
Jose Enrique, the current incumbent, has proven himself a steady defender and solid in passive possession, but lacks the decision-making process in the final third to truly bring Rodgers' football to life.
A lot of attacks start and then prematurely end with Enrique. He's a good asset that many clubs would have, but the gulf between he and Glen Johnson is pretty sizeable.
The other question mark revolves around Lucas Leiva, who continues to polarise opinion in the holding midfield slot.
The Reds could use another holding midfielder—preferably a physical presence, too—to compete with Lucas and put pressure on his game.