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The defensive midfielder, 21, has broken into the Portugal squad following his impressive showings for Sporting.

And the Arsenal boss wants to get a look at him early with a view to a possible move.

He's sent scouts to run the rule over Carvalho in recent weeks.

But competition for Carvalho's signature is rife.

David Moyes has had the Portuguese talent watched on a number of occasions as he seeks to bolster his midfield.

Carvalho's contract expires in 2018 and is understood to contain a release clause in the region of £37.5m.