Mourinho is just six months into the four-year-deal he signed in the summer worth a staggering £15m-a-season.
But despite struggling to make a huge impact since replacing Louis van Gaal, club bosses have been so impressed with him that handing him another long-term contract is already on their minds.
Senior figures inside Old Trafford have confirmed they would be happy for Mourinho to still be manager in nine years time.
Mourinho, 53, has never spent more than three seasons at any of the previous clubs he has managed.
Despite becoming one of the most successful bosses of all time, the Portuguese has been at seven different clubs since taking his first job at Benfica in 2000.
But if he goes on to make Manchester United great again and his bosses get their wish, Mourinho will still be there when he is well into his 60s.
Mourinho has made a turbulent start to life at United, losing three of his first seven games at the helm and being hit with two FA charges that have resulted in touchline bans.
But in recent weeks United have gone on a 10-match unbeaten run that has seen them reach the semi-finals of the EFL Cup, Europa League knockout stages and close the gap on the top four in the Premier League.
United still trail league leaders Chelsea by 13 points, but his superiors believe Mourinho can still catch his old club and win the title this season.
Starsport understands United chiefs are convinced United are close to becoming one of the best teams in Europe again under Mourinho.
Rival directors have told them that United look a far better side than last season and have made good progress under Mourinho.
Mourinho’s erratic behaviour on the touchline and in press conferences has been a concern to United bosses, as exclusively revealed in Starsport.
Mourinho has served two touchline bans and also fined £50,000 for comments made about referee Anthony Taylor ahead of United’s game at Liverpool.
United admit they would prefer him to be in the technical area instead of the stands.
But United also accept the ranting and raving comes with him being one of the world’s ‘box office’ managers.
United’s owners the Glazer families, along with executive vice chairman Ed Woodward, knew what to expect when they lured him to Old Trafford and are used to volatile behaviour – having dealt with former boss Sir Alex Ferguson doing the same during his glittering time at the helm.
Source: dailystar