The Belgium international moved to the Red Devils in a £75m deal from Premier League rivals Everton last summer.
Lukaku netted 10 times in his opening nine games in all competitions to silence some of his critics following his big-money transfer.
However, the 24-year-old managed to score 10 goals in his next 29 outings to promote some criticism of the summer signing.
Lukaku’s failure to hold up the ball and bring his team-mates into the game has attracted criticism from some fans and pundits.
However, former Arsenal striker Wright doesn’t have an issue with Lukaku’s weakness despite the groundswell of criticism.
Wright told BBC Radio 5 Live: “What Man United supporters need to understand is that the ball will bounce off Romelu Lukaku. That’s not the strongest part of his game.
“He is working on it.”
Lukaku scored against one of the Premier League’s top five for the first time at Old Trafford against Chelsea FC earlier this month.
The Belgian forward scored the equaliser to cancel out Willian’s opener before he teed up Jesse Lingard to net the winner.
He also assisted Marcus Rashford for one of his two goals against Liverpool FC on Saturday.
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