Kruger, who joined Glamorgan the close-season from Leicestershire, is set to be named the Welsh county's first Kolpak player.
The medium-pacer spent two seasons at Leicestershire before deciding to leave the county, citing a heavy workload. He continues to play for Lions in South Africa.
In 2008, Kruger took 32 wickets in the LV County Championship, but he could not lift the Foxes above mid-table mediocrity.
Prior to entering county cricket, has played three one-day internationals and a single Twenty20 international for South Africa.