West Ham manager David Moyes watched summer target Ryan Fredericks in midweek.
The Fulham right back is out of contract at the end of the season and Moyes is weighing up making an offer should he stay on as West Ham manager.
Moyes was at Craven Cottage on Tuesday and was suitably impressed by Fredericks as Fulham beat Leeds United 2-0.
Fredericks, a former England U19 international, began his career at Tottenham Hotspur and had a brief spell with Bristol City prior to joining Fulham in 2015.