Springbok captain Siya Kolisi and his wife, Rachel Kolisi, were visitors at a Liverpool Football Club training session on Tuesday.
Siya has been a life-long fan of the club and has spent time with Klopp and the players in the past.
With the Rugby Championship having come to an end this past weekend, the Kolisis are in Europe on a sponsor's trip with adidas.
"Impossible to put yesterday into words!" Rachel wrote on her Instagram account.
Kolisi, meanwhile, has been in impressive form for the Springboks this season. It is not yet clear when he will return to Durban to turn out for the Sharks during their United Rugby Championship campaign.
The Springboks are in action again when they take on Ireland, France, Italy and England on their November tour.