His family had not yet requested his removal from life support, Colombia Reports said. His current team, Pachuca, said Monday he would remain on life support at a hospital in Mexico City until the family does so.
Calero, 41, played for Atletico Nacional and Deportivo Cali in Colombia. He moved to Pachuca in 2000, first as a goalie and later became a team trainer.
He suffered a stroke in late November.
"What happened to Miguel Calero hurts all Colombians," President Juan Miguel Santos said on Twitter.