However, the former Chelsea manager played down the recent reports linking Neymar to the Red Devils and backed the forward to be the next superstar at Barcelona after Messi.
But Barcelona tied the forward to a five-year contract in October, and a release clause starting at £181m increases incrementally over the course of his deal.
Equally important to the Brazil worldwide is the opportunity to escape the situation at Barcelona, where Messi and Luis Suarez are considered more important to the club's success, and to play for a team structured around his own attacking talents.
"To win the Ballon d'Or is something that I've set as a goal, it would be a personal victory. So much that I think it [trying to sign Neymar] is like trying to break a safe, impossible", he added.
Although that deal was extended as recently as October, club sources describe it as "a sticking plaster" meant to patch over a conflict between Neymar and his employers.
The DIS group bought Neymar's rights in 2009 and were entitled to 40 per cent of his transfer from Santos to Barcelona, and they believe Neymar and the club conspired to falsify the fee involved. Even though Messi is still young with good years ahead of him, he is nearly 30 and Neymar will be Barcelona's great player after Messi.
"I like to help my team-mates and my team".
"I play because I like to and enjoy helping the team and making fans happy- only once I do that do I hope to achieve personal records".
"I like the playing style and the teams". And had a good laugh about it: "I think that after leaving Manchester United, I need an easier job than Manchester United".
Mourinho, who has managed Porto, Chelsea, Inter Milan and Real Madrid in his career, has previously claimed that he would one day like to coach a national side.