Manchester, July 16: Former Manchester United star Wayne Rooney on Sunday asked the club's newly signed striker Romelu Lukaku to stay mentally strong for the challenges ahead.
All leagues special site; Lukaku joins Man U
The 24-year-old Belgian striker Lukaku last week joined record English football champions Manchester United from Everton on a five-year contract with a reported transfer fee of 75 million pounds ($98.19 million).