Can Asensio play for Villa against parent club PSG?published at 10:50 Greenwich Mean Time

Yes. Marco Asensio can face his parent club Paris St-Germain in the Champions League quarter-finals.
The 29-year-old moved from Parc des Princes on loan to Villa Park in February.
Uefa rules state clubs cannot apply "any influence whatsoever over the players that another club may (or may not) field in a match".