THE 90th La Liga season is about to kick-off with a sense of relief that the competition’s biggest unique selling point has decided to stay with Barcelona. La Liga without Lionel Messi is unthinkable, although the time will come soon when the Barca number 10 departs Spain and takes up a fresh challenge. La Liga’s management  will have to make the most of this season, not just in leveraging Messi’s extraordinary talent, but also to position a clutch of new superstars that can become the faces of the global-reaching Spanish league. Upbeat La Liga launched its new season with an online presentation that did its best to whip-up excitement after the disruption of 2019-20, under-achievements in the Champions League and the turmoil at Barcelona…