Mari, who is on loan at Italian club Monza, was one of six people attacked at a supermarket near Milan on Thursday.
The Spaniard suffered a deep cut to his back during the incident and local media report that he will undergo surgery on Friday.
The centre-back has since spoken out about the attack:
“Today I was lucky, because I saw a person die in front of me,” Mari is quoted as saying by Gazzetta dello Sport.
Monza president Adriano Galliani visited Mari on Thursday along with the Serie A side’s head coach Raffaele Palladino:
“He was probably saved from his height,” Galliani told local media outside the Niguarda hospital.
“Pablo is an amazing guy. He had the strength to joke, telling me that he will be on the field on Monday. I brought him greetings from President Berlusconi and everyone. His team-mates wanted to come here but obviously it was not possible.”
Speaking to Italian station TG2 RAI, Galliani added: “Pablo Mari has quite a deep cut to his back, but fortunately it did not reach any vital organs like the lungs or anything else.
“His life is not in danger, he should recover quickly. He has some lesions, but not very serious. He is conscious and getting stitches.”