The Spain international believes the Argentine ace will remain the undisputed star at Camp Nou despite the arrival of Brazil sensation Neymar
Debate has raged over whether the Argentine ace will be compatible with the €57 million-man from Brazil, with club icon Johan Cruyff previously suggesting the Blaugrana should cash in on Messi rather than attempt to accommodate the attacking duo.
Alba, however, believes Neymar will have no trouble adapting to Barca's system - including the role of Messi as the undisputed main man.
He told AS: "He [Neymar] is a guy who has adapted very quickly to the Barca style.
"He is very eager, but Messi is number one and always will be for as long as he wishes."
Meanwhile, the Spain international took a moment to praise the impact of newly-appointed coach Gerardo Martino and revealed the Argentine has stuck to the club's template for success.
"He's a great coach who is instilling very positive things," he said.
"I think the style is the same. Everything works pretty much the same as before."
Barcelona will kick off their new Liga campaign with the visit of Levante on August 16.