He or Rooney need to play as lone strikers or with more dynamic strikers. They've never played well together as a 2, not really played well when Rooney's been a 10 and van Persie upfront. van Persie works best in a 4-3-3.
Rooney's best position for me is #9. I'd like to see him there and not running around all over the pitch. He's a very good 10 but for me lacks some of the key qualities to play there against good opposition.
He's a great goalscorer, stats don't lie. Stick him upfront and let him concentrate on scoring.
I agree, Rooney up top Mata behind, surely RvP wouldn't mind, his 30/31 getting his injury problems again & he knows the manager loves him & he Ioves LVG