The entire Juventus squad have been in "fiduciary isolation" after news of two non-playing members of staff tested positive for Covid-19.
That has not stopped six players - including Portugal's Cristiano Ronaldo - from leaving the Juventus 'bubble' to play for their countries over the course of the next few days.
"Aaron has just followed the protocols he's told," Wales manager Giggs said when addressing the situation.
"We expect him to be available for the Nations League games on Sunday (Republic of Ireland) and Wednesday (Bulgaria) and are finalising when he will come over.
"We've backed that up and I don't know the situations of any other countries."
Juventus vs Napoli was postponed after the visitors failed to show, meaning Andrea Pirlo’s side will be awarded a 3-0 victory.
The Italian champions said the positive tests were "neither players nor members of the technical or medical staff."
They also added: "This procedure will allow all members who tested negative to the controls to carry out regular training and match activities, but will not be allowed contact with outside the group.
"The club is in constant contact with the competent health authorities."
Wales will also be without Gareth Bale and Joe Allen, with Giggs aware the circumstances will test the depth to his squad.
“The strength in depth is going to be tested, but it's up to the players to stay in the team,” he added.
"We've got three games in a short space of time, so everyone has been juggling. We've got to have one eye on Sunday."
PA contributed to this report
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