The impressive South African international is out of contract at the end of the season.
With the possibility of landing Dikgacoi for nothing in the summer, a host of clubs are monitoring his situation.
A source confirmed to Sky Sports that Dikgacoi was yet to open talks with Palace about a new deal.
West Brom, Hull, Cardiff, Nottingham Forest and Leicester are reportedly amongst those looking at the 29-year-old former Fulham midfielder.
Some Bundesliga clubs are also believed to be scouting Dikgacoi with Nurnberg, Bayer Leverkusen and Werder Bremen amongst those checking on him in recent weeks.