The England international was made skipper of club and country earlier this season, and speaking to Sky Sports News, the United striker talked up his Old Trafford aspirations.
He said: "It's a big responsibility, I'm enjoying it. I want to make sure I'm a successful captain. I want to bring trophies back to this club.
"I want to make sure the players are happy and I want to be successful, and I've got a big role to play in that.
"As a group of lads, we're trying to help [the new signings] settle in. There are a lot of Spanish speakers in the dressing room and English is getting pushed aside a bit!"
United travel to Leicester City this afternoon and you can catch live commentary of the game here.