Manchester United midfielder Paul Pogba played a "big role" in Romelu Lukaku's decision to join the Premier League giants from Everton, the Belgian striker has said. The 24-year-old completed his switch on Monday, his reported 75 million pound fee making him the club's second most expensive signing after last year's world-record deal for France midfielder Pogba. "He is one of my best friends, and he is my neighbour as well," Lukaku told the club website. "We are always together on a daily basis so he would explain to me how things were going. "When he signed for United, to have witnessed that, it really triggered something in my brain and I knew that if one day I had the chance to sign then I would not say no." Pogba last week posted pictures with Lukaku on social media, calling himself 'Agent P'. Lukaku trained with United's squad on Monday ahead of their U.S. tour which begins with a match against LA Galaxy on July 16.