Ferguson fears Klopp will “do very well” at Anfield and that success will return at Liverpool.
“Well it’s a good appointment. I admire him,” the former Manchester United boss told ESPN.
“I know Jurgen pretty well through our meetings at coaches’ classes in Geneva.
“Strong personality, very strong, very stubborn, determined and his performances, and his career at Dortmund was a stellar rise to the top and I think he’ll do very well.
“I don’t like saying that, being Liverpool, because I’m worried about it but, no, he’ll do well.”