Skysports.com understands Premier League duo Stoke City and West Ham United are tracking Millwall winger James Henry.
The 21-year-old joined Millwall from Reading in the summer on a three-year contract after impressing in two loan spells at The Den.
Henry has continued to catch the eye with the Lions in the Championship as Kenny Jackett's side sit in the top half of the table.
The wide-man's consistent performances have not gone unnoticed higher up the ladder, with clubs taking note ahead of the January transfer window.
Stoke and West Ham are both monitoring Henry, who scored his first Championship goal of the season in the Lions' impressive 3-0 success over Scunthorpe at the weekend.