Romelu Lukaku (R) warms up during a Manchester United Open Training Session at the University of California (UCLA), July 14, 2017 in Los Angeles, California. / AFP PHOTO / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
LOS ANGELES, CA - JULY 14: Striker Romelu Lukaku of Manchester United during a training session for Tour 2017 July 14, 2017, in Los Angeles, California. (Photo by Shaun Clark/Getty Images)
LOS ANGELES, CA - JULY 14: Striker Romelu Lukaku of Manchester United during a training session for Tour 2017 July 14, 2017, in Los Angeles, California. (Photo by Shaun Clark/Getty Images)
LOS ANGELES, CA - JULY 14: Striker Romelu Lukaku of Manchester United during a training session for Tour 2017 July 14, 2017, in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
LOS ANGELES, CA - JULY 14: Romelu Lukaku of Manchester United in action during a first team training session as part of their pre-season tour of the USA at UCLA on July 14, 2017 in Los Angeles, California. (Photo by Matthew Peters/Manchester United via Getty Images)
