With the Catalan club's Liga opener against Levante this Sunday, the 33-year-old has praised the Argentine coach and has little doubt he will succeed at the Camp Nou outfit
Xavi believes Barcelona have found a renewed intensity since the arrival of new head coach Gerardo Martino earlier this summer.
The Spain international says the squad are adapting well to Martino's preferred style of play - with the new coach offering a forthright appraisal on what he expects from his side.
And Xavi is confident that the new man in charge will prove a success as Barca look to defend their Liga title this season.
"He is a leader, capable, prepared and has experience," Xavi told Sport.
"He is transmitting a lot to us. We are recovering a little of the intensity and rhythm that perhaps we lost for various reasons towards the end of last season. We are pressing very well and working well physically.
"He is adding things that he is influencing a lot. For example, on set-pieces we are working differently. We are adjusting and he is a guy that is very clear about what he wants."
Barcelona begin the defence of their Liga title when they welcome Levante to Camp Nou on Sunday.