Manchester United legend Sir Bobby Charlton says the club's fans are in paradise following the signing of Dutch striker Robin van Persie.

The 29 year old joined from Arsenal in the summer transfer window, and has wasted little time adapting to his new surroundings, scoring four goals in as many appearances, including a hat-trick in the win over Southampton.

Van Persie scored 30 Premier League goals last season, and Charlton, the club's record goalscorer, expects a repeat in the Netherlands international's first season at Old Trafford.

Robin van Persie
Van Persie has already scored four times for United since joining from Arsenal. Reuters

"We're very happy to have Robin van Persie here," Charlton said. "You can't possibly see him not scoring goals for us.

"He'll do his chasing, he's good in the air and he doesn't think about it. When the goal is there, he doesn't look up - take his goal against Fulham for example.

"The chance came to him and he just helped it on its way. Robin is a great goalscorer; that's why Sir Alex [Ferguson] likes him.

"It's just paradise for any team's supporters when they've got someone who can potentially score from nothing. He's got this skill and if his team are playing well then he will score the goals.

"He obviously thought highly of us as he could have been at other places but he's liked Sir Alex's approach. We've done quite well against Arsenal over the last few years, so maybe that's helped him make his decision to come here."

After rejecting the opportunity to extend his contract at Arsenal beyond next summer, United snapped up Van Persie to bolster an attack which already boasts Javier Hernandez, Wayne Rooney and Danny Welbeck.

Manager Sir Alex Ferguson is hoping the quartet can work in tandem to mirror the success produced by Andy Cole, Teddy Sheringham, Ole Gunnar Solskjaer and Dwight Yorke during United's treble winning campaign in 1999.

Van Persie will hope to continue to pay back his reported £24m transfer fee as United kick-off their Champions League campaign against Galatasaray on Wednesday, as they seek to bounce back from their group stage exit last season.

The three-time winners were knocked-out out by FC Basel during their last campaign having reached three finals in the four previous seasons.