The Brazilian is believed to have been the subject of a £35m bid from the Spanish giants, but Alves says that it will be difficult for the club to prise his countryman away from Stamford Bridge.
"I would be happy if David Luiz would come to Barcelona," Alves told El Mundo Deportivo. "I always want the best for my friends and advise them to join Barca if they get the chance.
"The problem is not whether he would like to come here, but that you have to take him away from Mourinho and that will not be easy. Letting David Luiz join Barca will not be an option for him and even less so as it would make us stronger. It will be incredibly difficult, nearly impossible."
Recent reports have claimed that Luiz will try to force through a move to Barcelona if Mourinho stands in his way.