Manchester United striker Romelu Lukaku says he didn't have to think twice when the Red Devils made contact.
Referring to the Red Devils as "the biggest club in the world", the Belgium international described his move to Old Trafford as a perfect opportunity.
The 24-year-old is set to sign for his new club for an initial £75million.
"It's a club that is hungry to win the league again, to be dominant in the world again," Lukaku told ESPN.
"It's the sort of opportunity I've always wanted since a child.
"When they came calling I didn't have to think twice, so I'm really delighted to be part of history.
"Who would say no to the biggest club in the world? The best stadium in England, the best fans. I mean, it's the perfect opportunity.
"I always said I wanted to play for a team that's challenging for every trophy that there is there. I think Manchester United at the minute wants to be the dominant team, the dominant force.
"Now it's time to work hard, work harder than I ever did before and I'm willing to do it."