The Manchester United captain has come under fire this term for his performances for Louis van Gaal’s side and his lack of goals.
Rooney netted a hat-trick away to Club Brugge in the Champions League, and also scored against Ipswich Town in the Capital One Cup as United recorded a routine 3-0 win at Old Trafford in September, but he has just one Premier League goal in seven starts.
Rooney has also scored twice for England this term – both from the penalty spot – against San Marino and Switzerland, and the latter saw him overtake Sir Bobby Charlton as the Three Lions’ all-time top scorer.
The spot-kick took him to 50 goals for his country, and Gunners forward Welbeck, who moved to the Emirates from Old Trafford for £16m on transfer deadline day back in the summer of 2014, thinks that Rooney’s detractors need to remember his former teammate’s accomplishments.
Welbeck also believes that it won’t be too long before Rooney is once against amongst the goals.
"He has just broken the England record," Welbeck told the Express.
"People are entitled to their own opinions, but we know what kind of player he is. I am sure soon enough he will be banging in the goals again.
"He is right up there, obviously [with the best players I have played with]. Growing up at United and training with him day-in, day-out you learn a lot from him."
Welbeck is currently sidelined with a knee injury, and is hoping to be back in the New Year after undergoing surgery last month.