Portugal football legend Eusebio is to stay in a Poznan hospital until Thursday owing to high blood pressure, the national team doctor Henrique Jones said.
Jones had indicated Sunday that the 1965 Ballon d'Or winner might be able to leave earlier but instead he will stay put for now.
Eusebio fell ill Saturday at the team hotel, and Dr Jones explained after visiting the 1965 Ballon d'Or winner: "He will rest for a couple of extra days and probably be allowed out Thursday.
"Although his state of health would allow him to leave hospital it has been decided he will be taken out by hospital plane. It's just an understandable precaution."
It is the fourth time this year that the 70-year-old has been hospitalised.