West Ham have scuppered Glasgow Rangers' bid to sign Domingos Quina on loan.
The Ibrox club want to take the 17-year-old midfield until the end of the season but West Ham have insisted that Quina is not available.
Slaven Bilic believes he could get first team opportunities this season.
Portugal Under 18s starlet Quina - who is a target for the English Football Association - is regarded as one of their top prospects and signed for West Ham from Chelsea last year after turning down interest from Arsenal and Manchester United.