Manchester United boss Sir Alex Ferguson has welcomed Brazilian twins Rafael and Fabio da Silva to the club.
"They're determined and quick, good footballers. What we don't know is their game appreciation as they've not played for a year because of the situation with their old club Fluminense as they didn't play them because they were joining us.
"Then they joined us in January and, of course, it was too late for the work permit, for the application. Their 18th birthdays meant we could apply for international clearance, which we got a couple of days ago.
"I'm delighted for the kids. They've worked so hard every training session and never missed a session."