Ruud van Nistelrooy says Manchester United deserve to be successful under new head coach Ruben Amorim, having left the club after the Portuguese's arrival this week. (More Football News)
Amorim officially left Sporting CP for United on Monday, with Van Nistelrooy having overseen four matches as interim coach after Erik ten Hag was sacked last month.
United won three and drew one of those matches, beating Leicester City twice and overcoming PAOK in the Europa League while drawing 1-1 with Chelsea in the Premier League.
At 39 years old, new boss Amorim will become the youngest man to lead United since a 33-year-old Wilf McGuinness took charge of them on Boxing Day 1970 against Derby County.
Van Nistelrooy, who had initially hoped to stay on in a backroom role under Amorim but departed earlier this week, is backing the Red Devils to be successful.
In a farewell post on Instagram, the former striker wrote: "To everyone at Manchester United football club, in particular the backroom staff, the players and the fans.
"I want to thank you from the bottom of my heart for your incredible efforts and support. It has been a privilege and honour to represent the club as a player, coach and manager, and I will always cherish the memories we have shared together.
"M.U.F.C will always have a special place in my heart, and I hope there are many more glory days at Old Trafford very soon - not only because I want the club to do well, but because you all deserve it!"
Amorim's first assignment as United boss will be a Premier League trip to Ipswich Town next week, before Bodo/Glimt visit Old Trafford in the Europa League on November 28.
Between his March 2020 appointment and his departure this month, Sporting won 77% of their Primeira Liga matches, the best win ratio in Europe's top 10 leagues in that span.