The 29-year-old has found the net just once in the Premier League, but Beckham is confident Rooney will soon be among the goals at his former club.
“Without a doubt Wayne is someone who can get on with anyone else in a dressing room”, said Beckham.
“Giggsy was a prime example”.
“I think Wayne will do the same”.
“He’s an out-and-out goalscorer, but he’s proved he can step into the midfield and play“.
Wayne Rooney faces a fitness race to play for England against Estonia on Friday after sitting out training on Tuesday.
Rooney became England’s record goalscorer last month, but his form at United has been patchy since the start of the season.
A hat-trick in the 7-1 aggregate Champions League qualifying stroll past Club Brugge and goals against Championship side Ipswich and still-winless Sunderland have failed to mask his malaise.
There was, understandably, no mention of Rooney’s very bad recent form, with the documentary instead focusing on the everyman element of Rooney’s personality, and his record breaking feats before the age of 30.
It will be a cause for concern for Louis van Gaal, who is tasked with motivating his players following a disappointing loss at the hands of Arsenal, and will hope to have his captain back for their clash against Everton on 17 October, just after the ongoing worldwide break.
He said: “The power of Wayne Rooney is his mentality and his strength – he never stops”.
“The time I’ve enjoyed playing for England most was under Sven and now under Roy Hodgson”, said Rooney, “the time in between that I wasn’t enjoying it as much as I should have. Maybe in the future we will play together again“.
Capello had a 66.67% win ratio from his 42 games in charge of England.
“I think when you get older, you have to adapt your play”, Beckham said.
“There are things, petty things, that make me angry, that he does, and I think why do it because you know it’s going to blow up”.
Beckham, who left United for Real Madrid in 2003, is eagerly anticipating his return in next month’s charity game.
Rooney also spoke about which were his favourite and least-favourite managers – and other than a rather transparent effort to curry favour with the present regime, he was quite forthcoming about England’s two highest-profile managers of the last generation.
With Stones out, Manchester United defender Chris Smalling could partner Gary Cahill in the centre of defence after an excellent start to the new season.