The Angola international has agreed to join The Red Devils having successfully come through a three-week trial with the Premier League champions.
Ferguson is delighted with the 24-year-old's attributes and feels with work he has the talent to impress at Old Trafford.
Goncalves has signed a three-year deal with United, although he needs to secure a work permit before being free to pursue his new career in England.
"He's quick, aggressive and there's something to work on there," explained Ferguson.
Meanwhile, Ferguson is not expecting to re-sign Henrik Larsson when the transfer window reopens in January as he did last time around.
"It would be an interesting one, but I don't think it's on," he concluded.