Alexis Sanchez is on the park in his first game for Man Utd

"Alexis Sanchez"

Alexis Sanchez is on the park in his first game for Man Utd, but who's getting the better deal - #MUFC, or #Arsenal getting Henrikh Mkhitaryan in return? We crunched the numbers http://bbc.in/2DuQkGn