Sporting boss Marcel Keizer wants Bruno Fernandes to remain at the Portuguese side amid ongoing links to Manchester United, insisting "a player of his quality cannot be replaced".
The Portuguese star contributed a staggering 32 goals and 17 assists for Sporting across all competitions last season, helping the team win two domestic trophies.
The 24-year-old has 48 goals and 37 assists to his name in 107 appearances for the club in total, with a number of top European clubs thought to be interested in his services.
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Man United are top of the pile having made contact with Sporting to discuss a potential deal for Fernandes, but the two parties have yet to agree on a final fee.