Feyenoord's Europa League round of 32 second leg clash with Roma has been labelled high-risk by police in Rotterdam.
Former Arsenal defender Ashley Cole says he did not write in the Invincible book over fear of upsetting fans.
Roma lost ground in the Serie A title race on Sunday after drawing 1-1 at Hellas Verona.
Police arrested 23 Feyenoord fans in Rome after trouble flared before their game with Roma, Italian authorities said.
Liverpool have been linked with £37m-rated Miralem Pjanic but who is the man touted as Steven Gerrard's replacement?
Leaders Juventus were held to a 2-2 draw by struggling Cesena, missing a late chance to win the game from a penalty.
Live only on