Gary Neville has urged Ralf Rangnick to completely overhaul Manchester United both and and off the pitch after the German was confirmed as the club's interim manager on Monday morning.
Rangnick has been hired on a short-term contract until the end of the season. He replaces Ole Gunnar Solskjaer, who was sacked earlier this month, while the Red Devils look for a new permanent manager.
The 63-year-old German has joined from Lokomotiv Moscow, where he was manager of sports and development, and will take over from caretaker boss Michael Carrick.
The former RB Leipzig and Hoffenheim manager, who has also served in various behind the scenes roles in his highly-regarded career, will then take on a two-year consultancy role at the club.
Neville, who has been a fierce critic of United's outgoing executive vice-chairman Ed Woodward, welcomed Rangnick on Twitter but urged him to completely overhaul the club during his time in Manchester.
Neville tweeted: 'Welcome to the Greatest Football Club in the World Ralf Rangnick.
'A contract for 6 months to coach the team.
'A contract for 2 years to coach the club.'
Speaking after his appointment had been confirmed, Rangnick said: 'I am excited to be joining Manchester United and focused on making this a successful season for the club.
'The squad is full of talent and has a great balance of youth and experience. All my efforts for the next six months will be on helping these players fulfil their potential, both individually and, most importantly, as a team.
'Beyond that, I look forward to supporting the club's longer-term goals on a consultancy basis.'
First-team coach Carrick – who has overseen a Champions League win over Villarreal and a draw at Premier League leaders Chelsea, where he dropped Cristiano Ronaldo – will remain in caretaker charge until Rangnick's work visa is finalised.
'Ralf is one of the most respected coaches and innovators in European football,' said United's football director John Murtough.
'He was our number one candidate for interim manager, reflecting the invaluable leadership and technical skills he will bring from almost four decades of experience in management and coaching.
'Everyone at the club is looking forward to working with him during the season ahead, and then for a further two years in his advisory role.'
More to follow.