Rinaldi, who had been on loan at 4th level BC of Legnano, was described by Atalanta as a “positive” and “appreciated by all” personality.
B.C. Legnano said in a statement on his website that Rinaldi’s death had been caused by an aneurysm.
“In the midst of his years, with a life ahead and a career that promised bright goals … sudden and shocking tragedy, impossible to even imagine,” said the club.
In its statement, the Atalanta Serie A club said: “Just as on the field you have always been the last to surrender, this time you have fought with all your might not to fly away too soon.
“But that kind smile of yours will always remain alive in the hearts of those who have been lucky enough to meet you.”
Rinaldi joined Atalanta as a thirteen year old and helped the club win the under-17 championship title and the Super Cup in 2016.
Giovanni Munafò, president of Legnano, added: “Andrea was arriving at the training session and the first thing he would have done was to come to me and say” Hi “.
“This is a memory that I will carry in my heart. An extraordinary boy, an example for everyone.
“On behalf of the club, I express my deepest condolences to the family. We are sure that Andrea from up there will be the warrior who was here, fighting on the field to give joy to the fans of Legnano.”