In an interview with Wette.de, Hamann said he'd heard a "secret meeting" between Slot and Wirtz had taken place before the deal with Leverkusen was agreed. "Apparently Liverpool have been in contact with Florian Wirtz for a long time, he and his family were impressed with how the club went about their business," he said.
"Liverpool tried to get him when he joined Bayer Leverkusen five years ago and have always been in touch, the interest then warmed again over the last year but nobody knew. Bayern Munich were very vocal about wanting him so everyone expected him to go there, but from what I’ve heard, he met Arne Slot who showed him around the training ground and that's when he made his mind up. If there were any doubts for him, meeting all the staff put that to rest and I think he has made a fantastic choice."