Ten Hag, who skipped Ajax's triumph celebrations, will be in Manchester United on Monday.
According to reports in England, the Dutch coach has already picked Sancho as one of the players with whom he wants to bring out the best in.
Sancho, who joined United from Borussia Dortmund last year, has had a difficult debut season at the club, scoring only five goals.
"To start fresh, with a new manager coming in, we're excited to see what his ideas and goals for the squad are," he said.
"All you have to do is think positively." My career is only getting started, and I'm hoping it will take off quickly. With all Manchester United has accomplished throughout the years, this has been a difficult season, especially as a Manchester United player.
"United has a reputation for winning trophies and competing against the best. This season has been challenging for all of us, but I believe we still need to demonstrate faith."