Brentford are interested in Tottenham's Spanish defender Sergio Reguilon.
Reguilon was signed by United in August following injuries to the club's left-backs Luke Shaw and Tyrell Malacia.
He joined Spurs from Real Madrid in 2020 and spent last season on loan at Atletico Madrid.
Brentford boss Thomas Frank is known to want an experienced left-back for the remainder of the campaign and Reguilon offers the wide attacking option he is looking for.