The 51-year-old, who helped to develop the Chilean forward's talent at Udinese, believes that a switch to Turin would solve the Italian club's lack of width in attack
The 25-year-old has been linked with a move from Camp Nou to the reigning Scudetto holders in recent weeks as Antonio Conte looks to bolster his attacking ranks in the summer.
Marino coached Alexis during two stints with Udinese before the winger joined the Blaugrana in a €37 million (£30.5m) deal in 2011 and he believes that the Chilean could form a strong attacking triumvirate with Fernando Llorente and Carlos Tevez.
"I think Alexis could fit very well into Conte's gameplan," he told Tuttomercatoweb. "He can cover both the role of second striker or as a winger in a trident.
"His versatility makes Alexis a factor that can helps him solve many coaching headaches. You need balance but a trident of Tevez-Llorente-Alexis is feasible as Alexis and Tevez know how to work in the defensive side of things.
"This past year Alexis has had several fitness problems but, this season, he has improved a lot despite little continuity. When playing at clubs like Barcelona, it is normal to have problems playing all of the time but his performances have always been positive.
"He's a great professional with a great work ethic and this will help him keep growing."
Juve midfielder Arturo Vidal, who plays alongside Alexis for Chile, urged his compatriot make the move from Spain back to Italy in March.