The 28-year-old, who is still contracted to newly-promoted Danish side Lyngby but has not featured in their opening two matches of the new season, has been told he can train with Helsingborg in view of a potential move.
“Right now he's just here to train,” Larsson told reporters. “When we have something to announce about something, such as a transfer, we will do it.”
Ralani played under Larsson for two seasons at Swedish second-tier side Landskrona between 2010 and 2012, where he was tipped for big things before persistent injuries stunted his progress.
He moved to Lyngby in 2014, helping the club win promotion to the top-flight at the end of last season, but has now been deemed surplus to requirements.
Ralani is a product of Farouk Khan’s Stars of Africa Academy that has produced the likes of Tokelo Rantie, May Mahlangu and Luther Singh.
There is already a South African connection of sorts at Helsingborg - it's the current home of former Kaizer Chiefs forward Matthew Rusike.