Join the debate at #bbcfootballpublished at 20:36 British Summer Time 21 April 2015
Darryl, Liverpool fan, Cheshire: Whoever decided David Luiz is a centre-back knows nothing about football. Put him in midfield like the tactical master Benitez did!
Gav: Don't know what is worse.. £100 billion for Trident Missile System OR David Luiz for £50m!
Charlie Eve: Jose is a genius! £50million for a clown! Well played Jose. Just Felipe and Ramires to go now!
Get in touch at #bbcfootball, external, pop on to the BBC Sport Facebook page, external or BBC Sport's Google+ area., external
You can also text us on 81111 in the UK only - don't forget to say who you are and where you are texting from.