"There were days when I was walking out of home, looked into my mobile and I didn't know what to do," he told Przeglad Sportowy.
"I spoke a lot with Konrad Golos and Tomasz Dawidowski – my managers from the agency representing me.
"Everyone said: 'Great offer, Klopp wants you, it's a fairytale in terms of finances'. All fine, but I wasn't convinced.
"I was driving my car and I said to my girlfriend: 'No, red light, I'm not leaving'. I felt great in Empoli, I didn't want to leave the lads when we were battling for the European places.
"I really wanted to start the preparations for the new season with a new team as soon as possible.