The current available United numbers are (up to 32):
2
20 (Fabio is on loan)
28
29
30
31
32
since none of these numbers seem reasonable (RVP has worn 9 and 16 for Holland and 10 at Arsenal and I doubt SAF will 'disrespect' him with such a high jersey number) he will wear 1 of 2 numbers.
9 - If and when Berbatov is transferred out.
0r
12 - The number 2 is available and Chris Smalling has number 12, not so much a traditional defenders number. Smalling could be given #2, freeing #12 for RVP.
My guess is he will wear 12 for this year, and next year he will be in #9.
Robin Van Persie Manchester United
Robin van Persie wore jersey number 9 in the 2014 FIFA World Cup.
26
26
If robin van Persie is to leave arsenal he will probably take no. 10 but no. 13 and no. 30 are available
what is it
He wears the number 10 in the 2011/2012 season
Didier Drogba (Chelsea and Ivory Coast), Arjen Robben (Real Madrid and Holland), Ryan Giggs (Manchester United and Wales), Robin van Persie (Arsenal and Holland), Gabriel Agbonlahor (Aston Villa and England). That's just a few off the top of my head.
Sparky Anderson / Reds Manager Phil Rizutto / Yankees Manager Ron Santo /Cubs Rusty Staub / Expos Pele /Soccer
he wore number 7
28
number 5