Brentford are pushing for a deal to sign Dutch defender Sepp van den Berg from Liverpool.
The 22-year-old, who has never made a Premier League appearance, has attracted enquiries from across Europe including the likes of Bayer Leverkusen, PSV, Wolfsburg and Hoffenheim.
The Reds recently rejected a bid from PSV as they value him closer to £20m.
Van den Berg arrived at Anfield in 2019 having impressed at his boyhood club PEC Zwolle in the Eredivisie.
Liverpool paid an initial fee of £1.3m for the defender, who is capable of being deployed both centrally and on the right flank.
Brentford are pursuing a deal to sign Dutch defender Sepp van den Berg from Liverpool
However, despite making several cup appearances during his maiden campaign on Merseyside Van den Berg has failed to work his way into first-team plans at the club and has spent the last four seasons on loan.
After two spells at Preston, Van den Berg endured an injury-disrupted spell at Schalke as they suffered relegation from the Bundesliga in 2022-23.
The Netherlands youth international returned to the German top flight last season, joining Mainz on a season-long loan.
During his time at the Mewa Arena Van den Berg made 33 appearances and netted three times as the club recovered from a disastrous start to go undefeated in their last nine games and secure a mid-table finish.