Howe joined the team on a four-year contract.
Eddie Howe will be in charge of the team for the first time when they play in the Championship on Saturday.
After missing his first game in charge, the new boss returned a negative test for coronaviruses on Friday.
The ex-Bournemouth boss failed a test the previous day and missed the draw.
There are no new cases at the bottom of the league.
When I had Covid a couple of months ago, I had no symptoms to start with, but it hit me really hard after about eight or nine days, and I began to struggle.
"But from how Eddie was, I'd say Sunday, Monday, Tuesday, in comparison to how he's now feeling and the tone of his voice, there's been a big difference."
The 10-day isolation period could begin after Howe's symptoms were traced back to last week.
The club followed all the necessary procedures so Howe, who was appointed as Steve Bruce's successor this month, is able to sit in the dugout just eight days after his positive test.
