The Argentine shot stopper has set his sights on a move to the Catalan giants and has nothing but praise for the club's coach
The Catalans have been linked with a number of goalkeepers in recent months as they prepare for life after Victor Valdes, who will leave Barca at the end of the 2013-14 season when his contract expires and Guzman is keen to make the move to Camp Nou.
"Obviously, it would be a dream to join Barcelona. It is clear that I have that illusion," he told El Mundo Deportivo.
"To be part of a team like Barca would be very nice, a dream.
"Now my challenge is to sustain what I have been doing at Newell's. After achieving a championship, the most difficult thing is to maintain that level personally and in the team."
Guzman then moved to lavish praise on Martino, hailing his personal and coaching attributes.
"He is a very special technician. I have learned a lot from him and his assistants," he added.
"He is a great person, which is perhaps more important than the kind of coach he is. He greatly impressed me and also managed a championship."
The 27-year-old Guzman worked with Martino from 2012 until the latter's departure to Barcelona this summer.