Not from the brightest of sources; this from a Q&A with RMC
Nabil Fékir seemed set to sign for Liverpool, but the transfer eventually failed to materialise, what circumstances led to this turnaround?
Again, this one is a very particular case. According to what I’ve been told, Fékir had had an agreement with Liverpool for a long time now, and it’s the club where he wanted to be playing next year. Everything had been sorted but the minor details – in transfers, the fee is often very quickly sorted out, but the small clauses take up a lot of time to negotiate, the ones that involve an amount being paid based on appearances for the national team, for example. All of that was sorted towards the end, right before he left for Russia.
Then the Liverpool medical team came to Clairefontaine to conduct the medical, and it’s at that point that the sources diverge. We know that Liverpool at that point stopped discussing the transfer, even though up until that point they had been quite open about it. Some sources say that the medical had not gone well because of his knee issues, although that would surprise me; I don’t see why he can go play a World Cup with a bad knee but not for Liverpool next season. Others say that it’s because either his agent or Jean-Michel Aulas asked for more money towards the end. It’s hard to know who’s telling the truth.
What I’m sure of, is that that the saga isn’t over. Liverpool will come back for Fékir at the end of the World Cup because he’s a player that Klopp’s been interested in for a while. I don’t what the sticking point was, whether it was a financial or medical problem, but if it had been medical, Liverpool would have stopped the transfer right there and then, but at the moment negotiations seem to be going on. There’s a possibility that they’re using his knee as a means of paying less, but in the end, they have the money and they know he wants to come.