Altidore has recovered from the ankle injury that kept him out of last week's 3-1 friendly win over Australia. The 20-year-old spent last season on loan at Hull City, and Bradley believes a year in England will have improved him as a footballer.
"It was an important year for Jozy," Bradley said. "Any player that has gone to the Premier League finds out about the level and the competitiveness.
"But I think he grew a lot at Hull and the one thing I would always say about Jozy, from our experiences with him, is when he's come into our camps he's shown that, when things don't come easily it's helped him. He comes in with a level of determination and ready to prove himself. He knows we believe in him. That's why he continues to be important for us."'
Inevitably the USA coach was quizzed on how he planned to deal with England striker Wayne Rooney, and Bradley admitted containing the Manchester United star would be of crucial importance.
"I would concede stopping Rooney is the key to our chances of success. He's such an important player in their team. He comes here off a super season. Our ability to keep track of him and make life hard for him is a key part of us making sure we can win."