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Who will partner Gerard Pique next season?
Why on earth are we heading into another transfer window with Barcelona's most pressing transfer need still not addressed?
It's a damning indictment of the current, and previous regimes at the club.
The Blaugrana have been one of the best teams to watch over the last few years but there is one area that has always caused them a problem.
The centre of defence.
It's become more noticeable since Carles Puyol's injuries have restricted his appearances and reduced Barca's fear factor.
Teams now know to pump the ball high into the box to exploit Barca's aerial deficiency.
Gerard Pique can generally be relied upon as long as he has someone like Puyol alongside him. Elegant on the ball, the six-footer really should be adept in the air, but he's one of the worst culprits.
Javier Mascherano has pace and spatial awareness but no aerial presence and isn't a natural fit for the position.
Marc Bartra needs games under his belt to fully realise his potential, but has been unable to stake a claim for a regular starting berth under Tata Martino.
Other players of his age, Mario Balotelli for example, have already played four times as many first team games as Bartra, so it's now or never for the young Catalan.
We have seen at least the last four transfer windows come and go without Barcelona strengthening in this area and—given current form and concerns—this simply cannot be allowed to happen again.
For Barca to improve as a unit, their first priority has to be to break the bank and sign a high-quality, commanding and aggressive centre-back.