Comparisons are being drawn between the Argentine pair with Napoli to host Barca tonight in their Champions League first-leg round 16 clash.
Alemao won the Scudetto with Maradona and told Radio Marca: "Playing with Maradona cannot be described, you have to be there. He was a genius. Only his presence fixed problems.
"Messi is a phenomenon, a difficult player to find. But Maradona was a genius, he has been much more than him. Maradona has done much more than Messi also in his national team and that must be taken into account in the comparison.
"Messi has a team playing for him and it shows in Argentina, when he goes with the National Team."