England face three games in seven days during this international break and have already lost Dominic Calvert-Lewin to injury, while there have been fears over Tyrone Mings.
Asked for team news ahead of Thursday’s game, Southgate said: “We’ve got a small knock with Jadon this morning so we’re going to assess him. Everyone else is fine.”
England have won all three of their qualifiers for the Qatar World Cup so far but this will be the first game since their defeat by Italy on penalties in the final of Euro 2020 in July.
“We have to start again,” said Southgate. “The journey to having the chance to have another run like that in a tournament is underway, and in these qualifiers you’ve got to be at your very best. Mentally, this is a good test for us.”
Predicted XI (4-3-3): Pickford; James, Maguire, Stones, Shaw; Rice, Phillips, Mount; Sterling, Kane, Grealish
Thursday: 7.45pm BST, ITV
Venue: Puskas Arena, Budapest
Referee: Cuneyt Cakır (Turkey)