Barcelona currently have a pretty poor defence.
Chances for the opposition are kept to a minimum due to the obscene possession figures the Spanish side pull in, but when teams do get a chance they slice right through them.
Carles Puyol's aging body is no longer fit for more than 20 games at full tilt per season, while Javier Mascherano looks very uncomfortable at the back.
Even Gerard Pique, a man who was widely considered the best centre-back in Europe not so long ago, is suffering. But one appropriate signing could breathe fresh air into this crop.
While many point to the attacking nature of Jordi Alba and Dani Alves, it's torrid to think how open the Catalans would be if it weren't for Sergio Busquets.
A signing is clearly needed.