The fullback has impressed in Portugal this season.
Sacko is 25 and has played regularly for Guimaraes this term, both in the league and Europa League.
If the Portuguese outfit decide to cash in on him, Premier League clubs are ready to make bids.
Many clubs are struggling financially around Europe due to COVID-19, and these circumstances may force Guimaraes and others to part with their prized assets.
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