Never a good time to play Barcelona, but not a bad one either for Celtic

Sunday was La Diada in Barcelona, the day when Catalan people celebrate their culture and identity, and the taste of defeat was in the air.

Messi, Suarez, Neymar and company had just tamely surrendered in Camp Nou to Alaves, whose last venture in La Liga ended after a single season 10 years ago.

In one sense it was the right result.