Torrecilla had successful surgery for a brain tumour last month.
Liverpool City Council, the University of Liverpool and John Moores University will look into the March 11 event.
More than 3,000 away fans made the trip to Merseyside for the March 11 fixture, despite Madrid already being subject to partial lockdown.
Etihad scouts made a personal check on Atletico Madrid midfielder Saul Niguez in the recent Champions League triumph over Liverpool, according to Spanish media.
Kieran Trippier has hit back at Atletico Madrid’s critics after his side dumped Liverpool out of the Champions League.
Arsenal have been urged to snap up Atletico Madrid star Thomas Partey quickly as they search for new midfield talent.
Arsenal are stepping up their interest in Atletico Madrid midfielder Thomas Partey and could be ready to offer £45million in the summer window.
Atletico Madrid manager Diego Simeone paid tribute to his goalkeeper Jan Oblak, comparing him to Lionel Messi for the way he wins games.
Liverpool crashed out of the Champions League last-16 4-2 on aggregate after losing 3-2 after extra-time against Atletico Madrid at Anfield.
Liverpool will aim to keep their Champions League defence going on Wednesday night when they welcome Atletico Madrid to Anfield.