Cardiff City's record £15 million (S$27 million) signing is missing and presumed dead after his private plane went off radar on Monday night at 8.23pm.
The Piper PA-46 Malibu plane had taken off from Nantes Atlantique airport around an hour earlier, and disappeared north of Guernsey as it made its way to Cardiff.
A search was suspended on Tuesday night, with Guernsey police saying the chances of survival were "slim" if the plane landed in water.
The Argentinian striker, signed from French Ligue 1 side Nantes, was set to train with his new teammates on Tuesday. The Premier League club has since cancelled the training session.