Burgess is making his return to the international set-up after a season in rugby union. The Rabbitohs star has been named as captain of England.
Widdop said it has been “great having Sam back”.
“Obviously he’s a key member of this squad,” he said.
“For him to come back to England rugby league is massive. I think the boys around him will certainly feel a lot more confident having him back in the squad.
“He’s a great bloke and a good person. I think everyone is really looking forward to playing alongside him.”
Widdop believes the pair’s form is another positive.
“Josh and Elliott have also had great seasons and played against a lot of the Aussies and Kiwis over the last year so they know a little bit about them,” he said.
“Being in good form always helps going into tournaments like this. They’re a massive boost for us.”