The pair have spent all season competing for the number one shirt at Anfield and despite being dropped in favour of the German in january, Mignolet showed sympathy for the man who took his place, promising to give him all the suppor he needs at this difficult time.
"I know how it is. You need a bit of time. The good thing about this final is that he will have the summer to take it and go forward," said Mignolet.
"If he wants to talk then of course I will be there. Every goalkeeper can relate to him.
"I've been in this situation before myself and those kind of things you deal with yourself.
"The only thing I told him is that there is a reason we got to this final, and why we played in this final, so think about that.
"But of course it is very difficult to say anything to him and to let him grasp it.
"He's only young. I'm sure he will (bounce back). I think we have all the tools at Liverpool as well to help him with that."
Meanwhile, the Belgian also expressed sympathy for the thousands of Liverpool fans who made the trip to Kiev, only to wind up disappointed.
"When you see the amount of supporters who were behind us throughout the whole campaign, with their special songs, they made something special happen this year," he continued.
"It's very bitter that we can't give them something back and not to give them the trophy that they wanted.
"Together with the fans, together with the rest of the club. I think we play not as individuals, but as a team, we play as 11 together, we play as a whole squad.
"Everyone was behind the team from the very first moment we stepped into the Champions League and I think that will be the same going forward.
"Liverpool stands for unity, Liverpool stands for 'all together'. I think that will not only be the right ideal for Liverpool, it has always been their history and will always be their future."