Cost for Pochettino ($10m) and his staff ($2m) is $12m.
Long-standing assistant Jesus Perez has also joined. Perez has hoped for a move to Old Trafford for some time.
Pochettino is viewed by Manchester United as an experienced coach with a philosophy and personality well-suited to the role.
His proven track record of building a strong culture stood out.
Manchester United sources say the decision to hire Pochettino was unanimous. The Glazers played an active part in the process.
Pochettino was the only coach the club spoke to directly. Eddie Howe did not have a formal interview.
Pochettino will be in charge for Liverpool on November 22. US Soccer say he will remain in charge for both Nations League games against Haiti first.
US Soccer CEO and Secretary General JT Batson: “Mauricio has left a lasting mark on US Soccer through his leadership, professionalism and commitment to our players and culture. What we are most proud of goes beyond the wins. He and his staff raised standards, strengthened our culture and created clearer connections from the Youth National Teams to the senior team. Those changes are now embedded in how we operate, and we will keep building on them as we pursue sustained success on the world stage.”
