Wolves are due to see a host of stars link up with their countries including Rui Patricio, Nelson Semedo, Conor Coady, Pedro Neto, Ruben Neves, Romain Saiss and Adama Traore.

Only two new positives were found after 2,915 players and staff were tested in the Premier League's latest round of testing but Nuno is worried the risk extra international travelling poses.

He said: "It's a big concern for everybody and for all the managers. All the squads in the Premier League have many players in the national teams, and with some national teams the current situation doesn't allow players to travel to that country.

"Everybody is worried but at the same time everybody is waiting for a decision so we can allow players to normally go to their teams and return safely to compete. It is the big issue.

"There is no manager at this moment who is not concerned about the welfare of their players.

"As long as they change environment, there's always a risk. It's a big concern for everybody.

"On a weekly basis we are tested two times and each time there is a test we are concerned. It's what we're living (with) in society and directly in football of course."