England vant årets Six Nations før du reiser til Australia og slo Wallabies 3-0. de slapp inn 10 prøver i serien, men, og Jones krevde defensiv forbedring.
“Det er ikke urettferdig kritikk, det er en kritikk,” sa gustard.
“Hvis du tar det personlig, så er det ditt ego og spillet handler ikke om oss, it’s not about our ego, it’s about the players.”
Our Top Pick for 6 Nation Rugby Tickets
Gustard has since spent time with the New Zealand Warriors rugby league team and oversaw an England training session with professional judo coaches on Monday.
“I was looking at league’s defensive systems and stuff around the tackle,” sa gustard.
“There are transferable skills from judo. We missed 80 tackles in the series against Australia and that’s not good enough.”
England host South Africa, Fiji, Argentina and Australia in November and December in the Autumn internationals.