For different reasons, both Liverpool and Manchester United would benefit from the arrival of a centre-back in the near future. Jurgen Klopp’s Liverpool side arguably have the best pairing in the Premier League with Virgil van Dijk and Ibrahima Konate. However, there could be little depth beyond the starting pair once we reach the summer. On the other hand, Erik ten Hag is still trying to find the perfect partner for the newly returned Lisandro Martinez. Raphael Varane still looks the obvious choice, however the defender is often linked with a move to Saudi Arabia. That being said, both Liverp…