What happened: Sullivan linked up with the senior squad in camp this week. He arrives after scoring three goals across two MLS matches.
Why it matters: A debut would make him one of the youngest to feature for the senior side, trailing only Freddy Adu after his first senior call-up at 16. It caps a breakout MLS run with 14 goal contributions this season.
By the numbers: 14 goal contributions this season; three goals across his last two MLS games.
What to watch: Watch whether he earns minutes in the upcoming fixtures.