Updated On: 28 November, 2013 01:24 AM IST | | Goal.com
Barcelona captain Carles Puyol has criticised his side's first-half performance in the 1-2 Champions League defeat to Ajax, saying they will suffer against other sides in Europe if there is no improvement.
Despite playing for most of the second half with a man advantage after Joel Veltman’s sending-off, Barca were unable to recover after going in two goals down at the break, though, Xavi did score from the penalty spot.

Viktor Fischer celebrates victory over Barcelona. Inset: Carles Puyol. Pics/Getty Images