25-year-old Lalkovic, who first joined the Saddlers on loan from Premier League giants Chelsea in 2013 before returning for the 2015/16 campaign, recently completed treatment for an Achilles injury which had ruled him out of the final few months of last season.
While Keates stopped short of offering the Košice-born man, who made almost ninety appearances during his two spells with the Saddlers, a deal he did admit he may take a closer look during pre-season.
Speaking via the Express & Star, Dean said; "He is a name that I have had put to me. He has been without a club since January so I have not been able to have a look at him live and, for me, that’s important. It’s a long time for somebody not to be playing.
"When we go through the course of the summer, we could have a discussion and there could be the opportunity to have a look at him in pre-season. That is the option I have have at my disposal."