However, Alves believes that his fellow Brazilian international can step up in the absence of the four-time Ballon d'Or winner.
"With Messi out injured, someone has to take over his role and Neymar is ready to do that," Alves told Globoesporte.
"He knows how important he is for Barca and that he was brought just in case something like this happened.
"For the player he is and for the quality he has, he's the right man for the job and I am sure that he will respond positively."
Barcelona are currently top of La Liga.