Liverpool goalkeeper Alisson Becker has returned to the club after sustaining a "suspected concussion" on international duty with Brazil.
The 32-year-old was substituted late on in the 2-1 World Cup qualifying win over Colombia on Friday after a nasty clash of heads with former Tottenham defender Davinson Sanchez.
Alisson will now return to Merseyside for assessment by Liverpool's medical staff.
"Alisson suffered a head injury and was replaced due to a suspected concussion," Brazil's team doctor Rodrigo Lasmar said after the match.
"We will now follow the CBF protocol, and he will undergo the recommended.