Klopp made the surprise call ahead of Sunday’s 4-3 victory over Man City to appoint Karius as the Reds’ new first-choice stopper.
This came after a troubled 18 months at the club for the young German, with Mignolet preferred despite Klopp pushing for his £4.7 million move from Mainz 05.
But speaking after the game, which saw Karius criticised for his role in Leroy Sane’s strike for City, the manager confirmed that “he will stay in goal.”
With just over two weeks left in the January transfer window, this leaves Mignolet with a big decision, and speaking to Belgian outlet Sporza the 29-year-old assessed the situation.
“Klopp told me that honestly and personally in that interview [on Sunday], of course I am not satisfied with that, but I always have to respect the trainer’s decision,” he said.
“After everything that has happened this season, I know where I stand, and the situation has become clearer.
“I always try to stay calm, and I have already grown stronger from such situations.
“But of course I also have to think about my own future, the only thing I can do is focus on the training and do my best.
“I’m [nearly] 30 years old and the World Cup is coming. This situation can not last too long, that’s clear. I can not say more about it.”
Mignolet also expressed confusion over his treatment from the Reds’ busy festive period up to now, going from captain in the 2-1 win at Burnley to demoted just four days later.
But he has stressed there is no ill feeling between him and Klopp, following suggestions of a heated row with the 50-year-old in the wake of the triumph over City.
“Ten days ago, after the game against Burnley, I had a conversation with Klopp,” he revealed.
“In the Christmas period we had rotated again and I felt that that was not a healthy situation for a ‘keeper.
“Klopp then told me what Sunday has confirmed before and after the match. Of course I’m not happy with that, but no strong words have come afterwards.”
Though Mignolet has battled adversity throughout his Liverpool career, having been dropped for the likes of Brad Jones and Adam Bogdan in the past, there is a sense of finality to this call.
Turning 30 in March, Mignolet may have already decided that it is futile to keep battling for the gloves at Anfield, and a move now seems likely.