Mane was clearly unhappy after he failed to start at Old Trafford, despite his team eventually securing a 4-2 victory.
Asked about Mane's noticeable frustration, Klopp said; "No there's no problem. It was because yesterday I changed things pretty late in training.
"My boys are used to me explaining and I didn't. No time, forgot it, whatever. And that was it. It's all fine."
| Jurgen Klopp and Sadio Mane after the match. pic.twitter.com/tBUq2q8sDZ
— The Anfield Buzz (@TheAnfieldBuzz) May 13, 2021