Yes, but why would it be any different? Best player of that year = The one who has performed the best that year.
Messi just happens to be both (happens often enough with better top players), best in overall regardless of year (unless its Cristiano Ronaldo the one considered that by some), and performed the best for that calendar year. Not the one who won most crucial titles of that year (team effort), but performed the best.
Top players have off years or are injured, and they arent considered, and someone who is usually worse then them win for that year (for example Drogba, Rooney, Henry etc having off years/injuries). But that example doesnt fit this scenario, does it?