The flamboyant Dutchman feels the club's new arrivals cannot be judged just yet, and added that it remains to be seen whether Tito Vilanova will succeed
The left-back left Valencia in June to return to the Catalan club, while the Cameroon international followed him two months later from Arsenal.
"We need to see them in action a bit more before we can judge them, but the bar is very high at Barcelona. We will have to wait and see what they can do," Cruyff stated to Radio Catalunya.
"Jordi Alba obviously has the advantage that he already played at Barcelona before as a kid. Song did a great job in England, but they play a different style of football there."
The Dutchman then went on to say that he hopes Tito Vilanova can make the transition from assistant coach to head trainer.
"Things are different when you are head coach. Hopefully he does well, but you never know how things will turn out.
"Tito has to overcome the different situation, but it could also be a positive thing. He has been Pep [Guardiola]'s assistant for four years, so knows all about the team."
Barcelona missed out on the Spanish Supercopa, but have started the 2012-13 Liga campaign with three wins from as many games.