The French striker had his laces untied by swapping passes with Pierre-Emerick Aubameyang before Arsenal’s 2-0 victory at Southampton.
Former Liverpool and Atletico Madrid striker Florent Sinama-Pongolle, a French television expert, said: “Lacazette is a replacement and doesn’t have his laces tied – those are the little things you must keep yourself and be careful.
“Unfortunately, these little things talk about the attitude and the team spirit at the moment.
“Arteta is not their father and he cannot be a cop behind them all the time – they are professional players who have an image to give and these are things that you need to fix very, very quickly. ”
Meanwhile, Man Utd, Barcelona and Real Madrid have been given the green light for an outcast, Matteo Guendouzi – after Mikel Arteta suggested he might be on his way to the Emirates.
Guendouzi was abandoned by Arteta for the trip to Southampton on Thursday after his antics and poor discipline during the defeat at Brighton.
The gunner’s chief publicly reprimanded the Frenchman, who in turn suggested that he could leave North London.
And Tottenham joined the race with Arsenal and Chelsea for Lille defender Gabriel Magalhaes.
The Spurs have launched an offer of £ 27 million for the player to try to catch it under the noses of their London rivals and on the Italian side Napoli, according to the football site Fichajes.net.
The 22-year-old Brazilian midfielder has made 24 appearances for the French team this season.