Veloso has caught the attention of some of Europe's biggest clubs with Chelsea, Arsenal and Manchester City all showing interest in the United target.
Portugal star Nani told The Sun: 'I know there are many rumours regarding Manchester United's interest in Veloso but I can't decide whether he comes.
Wanted man: Veloso (right) is set to leave Portugal
'I know him well because he was a team-mate of mine and I know he has the quality to play for a club like United.
'The football here is hard but he is someone who can do well at a big club. And I know he already has the opportunities to leave Sporting.'
The 23-year-old Veloso, an international colleague and former club-mate of Nani, has been in fine form this season, scoring against Everton in both legs of their Europa League tie.
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