"The physiotherapist (Graziano Fiorita), who had been with the Giallorossi for over 20 years, was with the team at their training camp in Coccaglio," the club said in a statement.
"The team will immediately return to Lecce, as tomorrow’s scheduled match against Atalanta will be postponed."
Atalanta are third in Serie A on 64 points, seven behind leaders Inter Milan. Lecce are 17th with 26 points, a point above the relegation zone with five rounds of matches remaining.