Van Persie is a continuation of United's summer investment, although it goes against Sir Alex Ferguson's trend of signing younger players.
So far this summer, Sir Alex has added Nick Powell and Shinji Kagawa—both of whom are attacking midfielders. But rumors abound that the signing of Van Persie signals a shift towards bolstering his attack.
Speaking on the move, Van Persie said (per the team's official website):
It's an honour to sign for Manchester United.
I am looking forward to following in the footsteps of so many great strikers, bringing my experience and playing my part to help the team compete for the biggest trophies in the game. I can't wait to get started.
Rio Ferdinand also reacted to the signing, saying it will be a major boost to United. From FourFourTwo.com:
Expectations here are higher than anywhere else in the world - some do brilliantly and some don't fare quite so well. I've got no worries about Robin, though. He's a very good professional and that will only work in his favour at this club.
We're bringing a big name into an environment that already has a lot of big names, especially in the forward department, so it's definitely going to shake things up. But it's going to be great for the squad.
When asked on his thoughts on pairing Wayne Rooney and Robin van Persie together, Sir Alex likened his current attacking options to those he had when he led United to the treble of the Premier League, Champions League and FA Cup in 1999. From the Manchester Evening News:
They're two fantastic players and it's great to have them both. But what gives us even more strength is the different combinations I have now.
If you go back to the '99 season, I had [Andy] Cole and [Dwight] Yorke and also Teddy [Sheringham] and Ole Gunnar [Solskjaer] - I had the four best strikers in Europe. Now I've got Wayne, Robin, Danny Welbeck, Chicharito, [Shinji] Kagawa - it's a fantastic collection of players and hopefully I can pick the right combinations!
The obvious name missing from that quote is, of course, Dimitar Berbatov. It remains to be seen what his future will be.