U.S. men's national team head coach Gregg Berhalter is not sure how much Christian Pulisic will be involved in their upcoming World Cup qualifiers.

The winger tested positive for COVID-19 last week and missed Chelsea's win over Arsenal in the Premier League.

Pulisic is in the squad for World Cup qualifiers against El Salvador, Canada and Honduras, but he may not be available for the entire international break.

"Regarding Christian it's going to be day to day just seeing where he's at," Berhalter said on Thursday.

"He's still under quarantine conditions in England, and we're going to have to get him stateside once he clears the quarantine and assess him.

"It's really too early to tell if he'll be available for September 2, for the fifth, or for the eighth. We just don't know right now. It's going to be a wait and see kind of thing."