Sporting manager Silas believes Bruno Fernandes is one of the best midfielders around and says he deserves to play in the Premier League.
The 25-year-old has been heavily linked to Manchester United, who are said to be determined to sign him from the Portuguese giants this month.
Sporting are reportedly demanding €65 million (£55m/$72m) for the former Udinese and Sampdoria man, though Silas says he is worth even more than is being talked about.
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And while the 43-year-old does not know when the move will be wrapped up, he says he will not try to discourage Fernandes from leaving for Old Trafford at this point in the season.