New United signing Manucho was on target for Angola as they continue their preparations for the African Nations Cup later this month.
The 24-year-old striker, who impressed on a three-week trial late last year, must wait to be granted a work permit before being allowed to complete his move to Old Trafford.
The Angolan forward struck the only goal of the friendly match against Dutch side Willem II in Portugal on Sunday.
Angola play Egypt in Lisbon on Thursday in their next warm-up match before their opening game African Nations Cup against South Africa in Tamale on 23 January.
zocoss
Wah so good ah? Can replace Dong when he comes back...