Beckham could play Barca next week when Paris St Germain take on the Catalans in the Champions League.
“It will be very hard,” he told Le Parisien. “Following their defeat to Milan, a lot of people said that they were already finished.
“But Barcelona are not just individual talents, primarily they are a team – perhaps the best ever.
“But we have the players and the mentality [to do well]. [PSG is] a great club and is aspiring to go even further in this competition.”