Sporting CP head coach Marcel Keizer said the future of Bruno Fernandes is a question for the club's board amid ongoing links to Manchester United.
Fernandes has been tipped to join United throughout the transfer window and talk of a switch to Old Trafford has gathered pace with the Premier League season on the horizon.
Sunday's Portuguese Super Cup – which Sporting lost 5-0 at the hands of rivals Benfica – was widely seen as a potential Fernandes farewell before leaving Lisbon.
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Portugal international Fernandes was a topic of conversation post-match and Keizer told reporters: "Bruno Fernandes is an important player.