Pochettino replaces Michael Carrick, who was sacked after United’s disastrous start to the season. Manchester United have appointed ⁠⁠Mauricio Pochettino as the new manager to replace the ⁠sacked Michael Carrick, as the Premier League ⁠giants sit in the relegation zone after their worst start to a league ‌campaign in 40 years. Pochettino will lead the United States national team in their upcoming matches against Haiti before joining ⁠Man United, US ⁠Soccer said on Friday.