Man Utd must battle Real Madrid, Barcelona for William Carvalho
The Daily Star says Moyes sent a team of scouts to watch Carvalho in action for Sporting Lisbon before the European transfer window closed.
It is understood Carvalho impressed United staff, with Moyes now considering a summer bid for the 21-year-old.
Carvalho is under contract until 2018 and has a release clause in his deal worth an estimated £37m.
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