Both tournaments will be played around the same time with Centenario starting a bit earlier than Euro 2016 and finishing earlier too.
http://en.wikipedia.org/wiki/Copa_América_Centenario
http://en.wikipedia.org/wiki/UEFA_Euro_2016
Question is which one will be the better tournament?
Centenario probably has the advantage in America's great infrastructure and stadiums as well the fact that the quality of teams is condensed to 16.
Euro 2016 will have the best team in the World in Germany but also a few average teams making up the final 24.
However, you could also argue that France has the better footballing culture and will provide a much better atmosphere than the centenario in the states.
http://en.wikipedia.org/wiki/Copa_América_Centenario
http://en.wikipedia.org/wiki/UEFA_Euro_2016
Question is which one will be the better tournament?
Centenario probably has the advantage in America's great infrastructure and stadiums as well the fact that the quality of teams is condensed to 16.
Euro 2016 will have the best team in the World in Germany but also a few average teams making up the final 24.
However, you could also argue that France has the better footballing culture and will provide a much better atmosphere than the centenario in the states.