Lionel Messi and three Paris Saint-Germain teammates have tested positive for COVID-19.

Mauricio Pochettino said he was unsure whether Messi, who is currently in Argentina, would feature in their next league game, at Lyon on Jan. 9.

"Messi has been in regular contact with our medical team, and when he has a negative test, he will travel to France, but we don't know any more than that. I don't know if he will be involved against Lyon.

"Until he gets a negative test in Argentina, he will not be able to travel to France. So it is all down to the test in terms of when he can travel. ... We will assess when he is ready to play."