This is the Guardian's take on it.
Liverpool standing firm in Joel Matip Africa Cup of Nations row• Jürgen Klopp believes defender has retired from international duty
• Cameroon’s Hugo Broos playing hardball and threatening sanctionsLiverpool insist they have no desire to get into a club vs country row over Joel Matip’s availability for Cameroon and only want to support the player’s own decision not to go to the Africa Cup of Nations.
The club are resigned to losing Sadio Mané to Senegal’s involvement in the tournament this month, but understood the situation with Matip was different. He has not played for Cameroon in over a year after a disagreement with the national team, while still a Schalke player, and said as long ago as September that he did not wish to be considered for the Cup of Nations.
Liverpool actually thought Matip had retired from international football, but if so the Cameroon coach Hugo Broos did not appear to get the message and named him in his squad. The German-born defender still has no intention with joining up with Cameroon in Gabon but Broos has indicated he may ask Fifa to invoke sanctions. If the ruling body suspects Liverpool of influencing the player’s decision or preventing him from joining up – something the club are adamant is far from the case – they could prevent him playing domestic games for the duration of the tournament.
Matip has been sidelined over the festive period with an ankle injury but Liverpool expect him to be ready for a return soon. They would be surprised were Fifa to take action against the player, for they were under the impression Cameroon had accepted the fact of his retirement some time ago. Speaking on the subject last month Jürgen Klopp said he was relaxed about the situation. “The players make these decisions by themselves, there is nothing the club can do,” the Liverpool manager said.
The West Brom right-back Allan Nyom also told Broos he wanted to stay at the Hawthorns to keep his place in Tony Pulis’s side.
Liverpool standing firm in Joel Matip Africa Cup of Nations row
https://www.theguardian.com/football/2017/jan/03/joel-matip-liverpool-cameroon-africa-cup-of-nations-hugo-broos?CMP=share_btn_tw