The teenager says he watches the U.S. men’s national team not just as a fan but as a future participant. On Alexi Lalas’ State of the Union podcast, Sullivan argued that he could have contributed on the right side during the United States’ round‑of‑16 loss to Belgium and expressed his desire for a senior‑team call‑up. "Thinking of that Belgium game, I think I could come into that game on the right side and make a difference, right? … It's not my team yet, but I'm obviously always dreaming and hoping call‑ups."

He also pointed to Alex Freeman’s header against Australia as the tournament’s defining moment. Sullivan recalled texting his family and feeling “goosebumps,” adding that the crowd’s roar was “insane.”

Sullivan’s rapid ascent reflects a broader shift in U.S. soccer development. Within a few years he has moved from a record‑breaking debut to attracting interest from top European clubs, and he is expected to join Premier League side Manchester City at the end of 2027, when he turns 18.

If his confidence translates into performance, Sullivan could become a regular contributor to the national team, helping the United States build a deeper talent pool for future World Cups. His story illustrates how early exposure, strong youth programs, and ambitious players are reshaping America’s soccer prospects.