The Manchester United forward became a fan favourite in his debut season at Old Trafford, playing a key role under Michael Carrick as the club secured a return to the Champions League. Brazil, meanwhile, are chasing a sixth World Cup title, with the final scheduled for 18 July.
Cunha spoke to AS about his season with United.
Asked how he experienced his rollercoaster first year at United, Cunha said he had gone in with his eyes open.
"When I decided to accept the United project, I was already aware of the scale of the club and everything that surrounds it. I think it's been a positive season for the club. We've got United back into the Champions League, and we hope to continue on this upward path next season. We have a lot of confidence in our work," Cunha said.
He was virtually undroppable under both Ruben Amorim and Carrick during the campaign, and was asked what lay behind that consistency.
"I think it's been a perfect combination. From the first day I felt comfortable and was very well received by the players, the staff and the fans. I found the calm I needed to give my best on the pitch, and that allowed me to have an excellent season. I'm very happy and I hope to keep helping the club achieve big things," he said.
With talk already turning to a possible captaincy, Cunha was asked whether he sees himself wearing the armband.
"Honestly, I don't think about that. The priority is helping the club and giving my best on the pitch. The armband is a consequence of what we do on the pitch. We're very well served by our current captains," he said.
Cunha also revealed he had tried to persuade Casemiro to extend his stay at Old Trafford before the midfielder's exit was confirmed.
"Me and the whole Manchester United fanbase. Casemiro is one of the great players of our football, and he would undoubtedly help us a lot if he stayed here. He was one of the players who welcomed me with open arms when I arrived, and I'm very grateful to him for that. If I could, I'd have him stay with us for another year. I wish him every success in what comes next," Cunha said.
Asked whether United could be considered England's answer to Real Madrid, and whether Champions League glory at Old Trafford was a realistic dream, Cunha pointed to the weight of the shirt.
"We're going to work to honour the jersey we wear and the whole beautiful history this club has. That's our promise to the fans. We want next season to be a season of triumphs," he said.
On United's return to Europe and Carrick's impact, Cunha was confident the club could now push for the Premier League title itself.
"In the final stretch of last season we got excellent results and performances against the teams at the top of the table, which allowed us to secure a place in the Champions League. We're aware of the scale of this club and the place it deserves. With everyone united, working for the good of the club, we hope to put Manchester United back on the path to victory," he said.